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Merge branch 'r8169-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/romieu...
[deliverable/linux.git] / drivers / net / r8169.c
1 /*
2 * r8169.c: RealTek 8169/8168/8101 ethernet driver.
3 *
4 * Copyright (c) 2002 ShuChen <shuchen@realtek.com.tw>
5 * Copyright (c) 2003 - 2007 Francois Romieu <romieu@fr.zoreil.com>
6 * Copyright (c) a lot of people too. Please respect their work.
7 *
8 * See MAINTAINERS file for support contact information.
9 */
10
11 #include <linux/module.h>
12 #include <linux/moduleparam.h>
13 #include <linux/pci.h>
14 #include <linux/netdevice.h>
15 #include <linux/etherdevice.h>
16 #include <linux/delay.h>
17 #include <linux/ethtool.h>
18 #include <linux/mii.h>
19 #include <linux/if_vlan.h>
20 #include <linux/crc32.h>
21 #include <linux/in.h>
22 #include <linux/ip.h>
23 #include <linux/tcp.h>
24 #include <linux/init.h>
25 #include <linux/dma-mapping.h>
26
27 #include <asm/system.h>
28 #include <asm/io.h>
29 #include <asm/irq.h>
30
31 #define RTL8169_VERSION "2.3LK-NAPI"
32 #define MODULENAME "r8169"
33 #define PFX MODULENAME ": "
34
35 #ifdef RTL8169_DEBUG
36 #define assert(expr) \
37 if (!(expr)) { \
38 printk( "Assertion failed! %s,%s,%s,line=%d\n", \
39 #expr,__FILE__,__FUNCTION__,__LINE__); \
40 }
41 #define dprintk(fmt, args...) \
42 do { printk(KERN_DEBUG PFX fmt, ## args); } while (0)
43 #else
44 #define assert(expr) do {} while (0)
45 #define dprintk(fmt, args...) do {} while (0)
46 #endif /* RTL8169_DEBUG */
47
48 #define R8169_MSG_DEFAULT \
49 (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN)
50
51 #define TX_BUFFS_AVAIL(tp) \
52 (tp->dirty_tx + NUM_TX_DESC - tp->cur_tx - 1)
53
54 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
55 static const int max_interrupt_work = 20;
56
57 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
58 The RTL chips use a 64 element hash table based on the Ethernet CRC. */
59 static const int multicast_filter_limit = 32;
60
61 /* MAC address length */
62 #define MAC_ADDR_LEN 6
63
64 #define MAX_READ_REQUEST_SHIFT 12
65 #define RX_FIFO_THRESH 7 /* 7 means NO threshold, Rx buffer level before first PCI xfer. */
66 #define RX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
67 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
68 #define EarlyTxThld 0x3F /* 0x3F means NO early transmit */
69 #define RxPacketMaxSize 0x3FE8 /* 16K - 1 - ETH_HLEN - VLAN - CRC... */
70 #define SafeMtu 0x1c20 /* ... actually life sucks beyond ~7k */
71 #define InterFrameGap 0x03 /* 3 means InterFrameGap = the shortest one */
72
73 #define R8169_REGS_SIZE 256
74 #define R8169_NAPI_WEIGHT 64
75 #define NUM_TX_DESC 64 /* Number of Tx descriptor registers */
76 #define NUM_RX_DESC 256 /* Number of Rx descriptor registers */
77 #define RX_BUF_SIZE 1536 /* Rx Buffer size */
78 #define R8169_TX_RING_BYTES (NUM_TX_DESC * sizeof(struct TxDesc))
79 #define R8169_RX_RING_BYTES (NUM_RX_DESC * sizeof(struct RxDesc))
80
81 #define RTL8169_TX_TIMEOUT (6*HZ)
82 #define RTL8169_PHY_TIMEOUT (10*HZ)
83
84 /* write/read MMIO register */
85 #define RTL_W8(reg, val8) writeb ((val8), ioaddr + (reg))
86 #define RTL_W16(reg, val16) writew ((val16), ioaddr + (reg))
87 #define RTL_W32(reg, val32) writel ((val32), ioaddr + (reg))
88 #define RTL_R8(reg) readb (ioaddr + (reg))
89 #define RTL_R16(reg) readw (ioaddr + (reg))
90 #define RTL_R32(reg) ((unsigned long) readl (ioaddr + (reg)))
91
92 enum mac_version {
93 RTL_GIGA_MAC_VER_01 = 0x01, // 8169
94 RTL_GIGA_MAC_VER_02 = 0x02, // 8169S
95 RTL_GIGA_MAC_VER_03 = 0x03, // 8110S
96 RTL_GIGA_MAC_VER_04 = 0x04, // 8169SB
97 RTL_GIGA_MAC_VER_05 = 0x05, // 8110SCd
98 RTL_GIGA_MAC_VER_06 = 0x06, // 8110SCe
99 RTL_GIGA_MAC_VER_07 = 0x07, // 8102e
100 RTL_GIGA_MAC_VER_08 = 0x08, // 8102e
101 RTL_GIGA_MAC_VER_09 = 0x09, // 8102e
102 RTL_GIGA_MAC_VER_10 = 0x0a, // 8101e
103 RTL_GIGA_MAC_VER_11 = 0x0b, // 8168Bb
104 RTL_GIGA_MAC_VER_12 = 0x0c, // 8168Be
105 RTL_GIGA_MAC_VER_13 = 0x0d, // 8101Eb
106 RTL_GIGA_MAC_VER_14 = 0x0e, // 8101 ?
107 RTL_GIGA_MAC_VER_15 = 0x0f, // 8101 ?
108 RTL_GIGA_MAC_VER_16 = 0x11, // 8101Ec
109 RTL_GIGA_MAC_VER_17 = 0x10, // 8168Bf
110 RTL_GIGA_MAC_VER_18 = 0x12, // 8168CP
111 RTL_GIGA_MAC_VER_19 = 0x13, // 8168C
112 RTL_GIGA_MAC_VER_20 = 0x14 // 8168C
113 };
114
115 #define _R(NAME,MAC,MASK) \
116 { .name = NAME, .mac_version = MAC, .RxConfigMask = MASK }
117
118 static const struct {
119 const char *name;
120 u8 mac_version;
121 u32 RxConfigMask; /* Clears the bits supported by this chip */
122 } rtl_chip_info[] = {
123 _R("RTL8169", RTL_GIGA_MAC_VER_01, 0xff7e1880), // 8169
124 _R("RTL8169s", RTL_GIGA_MAC_VER_02, 0xff7e1880), // 8169S
125 _R("RTL8110s", RTL_GIGA_MAC_VER_03, 0xff7e1880), // 8110S
126 _R("RTL8169sb/8110sb", RTL_GIGA_MAC_VER_04, 0xff7e1880), // 8169SB
127 _R("RTL8169sc/8110sc", RTL_GIGA_MAC_VER_05, 0xff7e1880), // 8110SCd
128 _R("RTL8169sc/8110sc", RTL_GIGA_MAC_VER_06, 0xff7e1880), // 8110SCe
129 _R("RTL8102e", RTL_GIGA_MAC_VER_07, 0xff7e1880), // PCI-E
130 _R("RTL8102e", RTL_GIGA_MAC_VER_08, 0xff7e1880), // PCI-E
131 _R("RTL8102e", RTL_GIGA_MAC_VER_09, 0xff7e1880), // PCI-E
132 _R("RTL8101e", RTL_GIGA_MAC_VER_10, 0xff7e1880), // PCI-E
133 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_11, 0xff7e1880), // PCI-E
134 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_12, 0xff7e1880), // PCI-E
135 _R("RTL8101e", RTL_GIGA_MAC_VER_13, 0xff7e1880), // PCI-E 8139
136 _R("RTL8100e", RTL_GIGA_MAC_VER_14, 0xff7e1880), // PCI-E 8139
137 _R("RTL8100e", RTL_GIGA_MAC_VER_15, 0xff7e1880), // PCI-E 8139
138 _R("RTL8168b/8111b", RTL_GIGA_MAC_VER_17, 0xff7e1880), // PCI-E
139 _R("RTL8101e", RTL_GIGA_MAC_VER_16, 0xff7e1880), // PCI-E
140 _R("RTL8168cp/8111cp", RTL_GIGA_MAC_VER_18, 0xff7e1880), // PCI-E
141 _R("RTL8168c/8111c", RTL_GIGA_MAC_VER_19, 0xff7e1880), // PCI-E
142 _R("RTL8168c/8111c", RTL_GIGA_MAC_VER_20, 0xff7e1880) // PCI-E
143 };
144 #undef _R
145
146 enum cfg_version {
147 RTL_CFG_0 = 0x00,
148 RTL_CFG_1,
149 RTL_CFG_2
150 };
151
152 static void rtl_hw_start_8169(struct net_device *);
153 static void rtl_hw_start_8168(struct net_device *);
154 static void rtl_hw_start_8101(struct net_device *);
155
156 static struct pci_device_id rtl8169_pci_tbl[] = {
157 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8129), 0, 0, RTL_CFG_0 },
158 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8136), 0, 0, RTL_CFG_2 },
159 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8167), 0, 0, RTL_CFG_0 },
160 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8168), 0, 0, RTL_CFG_1 },
161 { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8169), 0, 0, RTL_CFG_0 },
162 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4300), 0, 0, RTL_CFG_0 },
163 { PCI_DEVICE(PCI_VENDOR_ID_AT, 0xc107), 0, 0, RTL_CFG_0 },
164 { PCI_DEVICE(0x16ec, 0x0116), 0, 0, RTL_CFG_0 },
165 { PCI_VENDOR_ID_LINKSYS, 0x1032,
166 PCI_ANY_ID, 0x0024, 0, 0, RTL_CFG_0 },
167 { 0x0001, 0x8168,
168 PCI_ANY_ID, 0x2410, 0, 0, RTL_CFG_2 },
169 {0,},
170 };
171
172 MODULE_DEVICE_TABLE(pci, rtl8169_pci_tbl);
173
174 static int rx_copybreak = 200;
175 static int use_dac;
176 static struct {
177 u32 msg_enable;
178 } debug = { -1 };
179
180 enum rtl_registers {
181 MAC0 = 0, /* Ethernet hardware address. */
182 MAC4 = 4,
183 MAR0 = 8, /* Multicast filter. */
184 CounterAddrLow = 0x10,
185 CounterAddrHigh = 0x14,
186 TxDescStartAddrLow = 0x20,
187 TxDescStartAddrHigh = 0x24,
188 TxHDescStartAddrLow = 0x28,
189 TxHDescStartAddrHigh = 0x2c,
190 FLASH = 0x30,
191 ERSR = 0x36,
192 ChipCmd = 0x37,
193 TxPoll = 0x38,
194 IntrMask = 0x3c,
195 IntrStatus = 0x3e,
196 TxConfig = 0x40,
197 RxConfig = 0x44,
198 RxMissed = 0x4c,
199 Cfg9346 = 0x50,
200 Config0 = 0x51,
201 Config1 = 0x52,
202 Config2 = 0x53,
203 Config3 = 0x54,
204 Config4 = 0x55,
205 Config5 = 0x56,
206 MultiIntr = 0x5c,
207 PHYAR = 0x60,
208 PHYstatus = 0x6c,
209 RxMaxSize = 0xda,
210 CPlusCmd = 0xe0,
211 IntrMitigate = 0xe2,
212 RxDescAddrLow = 0xe4,
213 RxDescAddrHigh = 0xe8,
214 EarlyTxThres = 0xec,
215 FuncEvent = 0xf0,
216 FuncEventMask = 0xf4,
217 FuncPresetState = 0xf8,
218 FuncForceEvent = 0xfc,
219 };
220
221 enum rtl8110_registers {
222 TBICSR = 0x64,
223 TBI_ANAR = 0x68,
224 TBI_LPAR = 0x6a,
225 };
226
227 enum rtl8168_8101_registers {
228 CSIDR = 0x64,
229 CSIAR = 0x68,
230 #define CSIAR_FLAG 0x80000000
231 #define CSIAR_WRITE_CMD 0x80000000
232 #define CSIAR_BYTE_ENABLE 0x0f
233 #define CSIAR_BYTE_ENABLE_SHIFT 12
234 #define CSIAR_ADDR_MASK 0x0fff
235
236 EPHYAR = 0x80,
237 #define EPHYAR_FLAG 0x80000000
238 #define EPHYAR_WRITE_CMD 0x80000000
239 #define EPHYAR_REG_MASK 0x1f
240 #define EPHYAR_REG_SHIFT 16
241 #define EPHYAR_DATA_MASK 0xffff
242 DBG_REG = 0xd1,
243 #define FIX_NAK_1 (1 << 4)
244 #define FIX_NAK_2 (1 << 3)
245 };
246
247 enum rtl_register_content {
248 /* InterruptStatusBits */
249 SYSErr = 0x8000,
250 PCSTimeout = 0x4000,
251 SWInt = 0x0100,
252 TxDescUnavail = 0x0080,
253 RxFIFOOver = 0x0040,
254 LinkChg = 0x0020,
255 RxOverflow = 0x0010,
256 TxErr = 0x0008,
257 TxOK = 0x0004,
258 RxErr = 0x0002,
259 RxOK = 0x0001,
260
261 /* RxStatusDesc */
262 RxFOVF = (1 << 23),
263 RxRWT = (1 << 22),
264 RxRES = (1 << 21),
265 RxRUNT = (1 << 20),
266 RxCRC = (1 << 19),
267
268 /* ChipCmdBits */
269 CmdReset = 0x10,
270 CmdRxEnb = 0x08,
271 CmdTxEnb = 0x04,
272 RxBufEmpty = 0x01,
273
274 /* TXPoll register p.5 */
275 HPQ = 0x80, /* Poll cmd on the high prio queue */
276 NPQ = 0x40, /* Poll cmd on the low prio queue */
277 FSWInt = 0x01, /* Forced software interrupt */
278
279 /* Cfg9346Bits */
280 Cfg9346_Lock = 0x00,
281 Cfg9346_Unlock = 0xc0,
282
283 /* rx_mode_bits */
284 AcceptErr = 0x20,
285 AcceptRunt = 0x10,
286 AcceptBroadcast = 0x08,
287 AcceptMulticast = 0x04,
288 AcceptMyPhys = 0x02,
289 AcceptAllPhys = 0x01,
290
291 /* RxConfigBits */
292 RxCfgFIFOShift = 13,
293 RxCfgDMAShift = 8,
294
295 /* TxConfigBits */
296 TxInterFrameGapShift = 24,
297 TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
298
299 /* Config1 register p.24 */
300 LEDS1 = (1 << 7),
301 LEDS0 = (1 << 6),
302 MSIEnable = (1 << 5), /* Enable Message Signaled Interrupt */
303 Speed_down = (1 << 4),
304 MEMMAP = (1 << 3),
305 IOMAP = (1 << 2),
306 VPD = (1 << 1),
307 PMEnable = (1 << 0), /* Power Management Enable */
308
309 /* Config2 register p. 25 */
310 PCI_Clock_66MHz = 0x01,
311 PCI_Clock_33MHz = 0x00,
312
313 /* Config3 register p.25 */
314 MagicPacket = (1 << 5), /* Wake up when receives a Magic Packet */
315 LinkUp = (1 << 4), /* Wake up when the cable connection is re-established */
316 Beacon_en = (1 << 0), /* 8168 only. Reserved in the 8168b */
317
318 /* Config5 register p.27 */
319 BWF = (1 << 6), /* Accept Broadcast wakeup frame */
320 MWF = (1 << 5), /* Accept Multicast wakeup frame */
321 UWF = (1 << 4), /* Accept Unicast wakeup frame */
322 LanWake = (1 << 1), /* LanWake enable/disable */
323 PMEStatus = (1 << 0), /* PME status can be reset by PCI RST# */
324
325 /* TBICSR p.28 */
326 TBIReset = 0x80000000,
327 TBILoopback = 0x40000000,
328 TBINwEnable = 0x20000000,
329 TBINwRestart = 0x10000000,
330 TBILinkOk = 0x02000000,
331 TBINwComplete = 0x01000000,
332
333 /* CPlusCmd p.31 */
334 EnableBist = (1 << 15), // 8168 8101
335 Mac_dbgo_oe = (1 << 14), // 8168 8101
336 Normal_mode = (1 << 13), // unused
337 Force_half_dup = (1 << 12), // 8168 8101
338 Force_rxflow_en = (1 << 11), // 8168 8101
339 Force_txflow_en = (1 << 10), // 8168 8101
340 Cxpl_dbg_sel = (1 << 9), // 8168 8101
341 ASF = (1 << 8), // 8168 8101
342 PktCntrDisable = (1 << 7), // 8168 8101
343 Mac_dbgo_sel = 0x001c, // 8168
344 RxVlan = (1 << 6),
345 RxChkSum = (1 << 5),
346 PCIDAC = (1 << 4),
347 PCIMulRW = (1 << 3),
348 INTT_0 = 0x0000, // 8168
349 INTT_1 = 0x0001, // 8168
350 INTT_2 = 0x0002, // 8168
351 INTT_3 = 0x0003, // 8168
352
353 /* rtl8169_PHYstatus */
354 TBI_Enable = 0x80,
355 TxFlowCtrl = 0x40,
356 RxFlowCtrl = 0x20,
357 _1000bpsF = 0x10,
358 _100bps = 0x08,
359 _10bps = 0x04,
360 LinkStatus = 0x02,
361 FullDup = 0x01,
362
363 /* _TBICSRBit */
364 TBILinkOK = 0x02000000,
365
366 /* DumpCounterCommand */
367 CounterDump = 0x8,
368 };
369
370 enum desc_status_bit {
371 DescOwn = (1 << 31), /* Descriptor is owned by NIC */
372 RingEnd = (1 << 30), /* End of descriptor ring */
373 FirstFrag = (1 << 29), /* First segment of a packet */
374 LastFrag = (1 << 28), /* Final segment of a packet */
375
376 /* Tx private */
377 LargeSend = (1 << 27), /* TCP Large Send Offload (TSO) */
378 MSSShift = 16, /* MSS value position */
379 MSSMask = 0xfff, /* MSS value + LargeSend bit: 12 bits */
380 IPCS = (1 << 18), /* Calculate IP checksum */
381 UDPCS = (1 << 17), /* Calculate UDP/IP checksum */
382 TCPCS = (1 << 16), /* Calculate TCP/IP checksum */
383 TxVlanTag = (1 << 17), /* Add VLAN tag */
384
385 /* Rx private */
386 PID1 = (1 << 18), /* Protocol ID bit 1/2 */
387 PID0 = (1 << 17), /* Protocol ID bit 2/2 */
388
389 #define RxProtoUDP (PID1)
390 #define RxProtoTCP (PID0)
391 #define RxProtoIP (PID1 | PID0)
392 #define RxProtoMask RxProtoIP
393
394 IPFail = (1 << 16), /* IP checksum failed */
395 UDPFail = (1 << 15), /* UDP/IP checksum failed */
396 TCPFail = (1 << 14), /* TCP/IP checksum failed */
397 RxVlanTag = (1 << 16), /* VLAN tag available */
398 };
399
400 #define RsvdMask 0x3fffc000
401
402 struct TxDesc {
403 __le32 opts1;
404 __le32 opts2;
405 __le64 addr;
406 };
407
408 struct RxDesc {
409 __le32 opts1;
410 __le32 opts2;
411 __le64 addr;
412 };
413
414 struct ring_info {
415 struct sk_buff *skb;
416 u32 len;
417 u8 __pad[sizeof(void *) - sizeof(u32)];
418 };
419
420 enum features {
421 RTL_FEATURE_WOL = (1 << 0),
422 RTL_FEATURE_MSI = (1 << 1),
423 RTL_FEATURE_GMII = (1 << 2),
424 };
425
426 struct rtl8169_private {
427 void __iomem *mmio_addr; /* memory map physical address */
428 struct pci_dev *pci_dev; /* Index of PCI device */
429 struct net_device *dev;
430 struct napi_struct napi;
431 spinlock_t lock; /* spin lock flag */
432 u32 msg_enable;
433 int chipset;
434 int mac_version;
435 u32 cur_rx; /* Index into the Rx descriptor buffer of next Rx pkt. */
436 u32 cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */
437 u32 dirty_rx;
438 u32 dirty_tx;
439 struct TxDesc *TxDescArray; /* 256-aligned Tx descriptor ring */
440 struct RxDesc *RxDescArray; /* 256-aligned Rx descriptor ring */
441 dma_addr_t TxPhyAddr;
442 dma_addr_t RxPhyAddr;
443 struct sk_buff *Rx_skbuff[NUM_RX_DESC]; /* Rx data buffers */
444 struct ring_info tx_skb[NUM_TX_DESC]; /* Tx data buffers */
445 unsigned align;
446 unsigned rx_buf_sz;
447 struct timer_list timer;
448 u16 cp_cmd;
449 u16 intr_event;
450 u16 napi_event;
451 u16 intr_mask;
452 int phy_auto_nego_reg;
453 int phy_1000_ctrl_reg;
454 #ifdef CONFIG_R8169_VLAN
455 struct vlan_group *vlgrp;
456 #endif
457 int (*set_speed)(struct net_device *, u8 autoneg, u16 speed, u8 duplex);
458 int (*get_settings)(struct net_device *, struct ethtool_cmd *);
459 void (*phy_reset_enable)(void __iomem *);
460 void (*hw_start)(struct net_device *);
461 unsigned int (*phy_reset_pending)(void __iomem *);
462 unsigned int (*link_ok)(void __iomem *);
463 int pcie_cap;
464 struct delayed_work task;
465 unsigned features;
466
467 struct mii_if_info mii;
468 };
469
470 MODULE_AUTHOR("Realtek and the Linux r8169 crew <netdev@vger.kernel.org>");
471 MODULE_DESCRIPTION("RealTek RTL-8169 Gigabit Ethernet driver");
472 module_param(rx_copybreak, int, 0);
473 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
474 module_param(use_dac, int, 0);
475 MODULE_PARM_DESC(use_dac, "Enable PCI DAC. Unsafe on 32 bit PCI slot.");
476 module_param_named(debug, debug.msg_enable, int, 0);
477 MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)");
478 MODULE_LICENSE("GPL");
479 MODULE_VERSION(RTL8169_VERSION);
480
481 static int rtl8169_open(struct net_device *dev);
482 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev);
483 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance);
484 static int rtl8169_init_ring(struct net_device *dev);
485 static void rtl_hw_start(struct net_device *dev);
486 static int rtl8169_close(struct net_device *dev);
487 static void rtl_set_rx_mode(struct net_device *dev);
488 static void rtl8169_tx_timeout(struct net_device *dev);
489 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev);
490 static int rtl8169_rx_interrupt(struct net_device *, struct rtl8169_private *,
491 void __iomem *, u32 budget);
492 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu);
493 static void rtl8169_down(struct net_device *dev);
494 static void rtl8169_rx_clear(struct rtl8169_private *tp);
495 static int rtl8169_poll(struct napi_struct *napi, int budget);
496
497 static const unsigned int rtl8169_rx_config =
498 (RX_FIFO_THRESH << RxCfgFIFOShift) | (RX_DMA_BURST << RxCfgDMAShift);
499
500 static void mdio_write(void __iomem *ioaddr, int reg_addr, int value)
501 {
502 int i;
503
504 RTL_W32(PHYAR, 0x80000000 | (reg_addr & 0x1f) << 16 | (value & 0xffff));
505
506 for (i = 20; i > 0; i--) {
507 /*
508 * Check if the RTL8169 has completed writing to the specified
509 * MII register.
510 */
511 if (!(RTL_R32(PHYAR) & 0x80000000))
512 break;
513 udelay(25);
514 }
515 }
516
517 static int mdio_read(void __iomem *ioaddr, int reg_addr)
518 {
519 int i, value = -1;
520
521 RTL_W32(PHYAR, 0x0 | (reg_addr & 0x1f) << 16);
522
523 for (i = 20; i > 0; i--) {
524 /*
525 * Check if the RTL8169 has completed retrieving data from
526 * the specified MII register.
527 */
528 if (RTL_R32(PHYAR) & 0x80000000) {
529 value = RTL_R32(PHYAR) & 0xffff;
530 break;
531 }
532 udelay(25);
533 }
534 return value;
535 }
536
537 static void mdio_patch(void __iomem *ioaddr, int reg_addr, int value)
538 {
539 mdio_write(ioaddr, reg_addr, mdio_read(ioaddr, reg_addr) | value);
540 }
541
542 static void rtl_mdio_write(struct net_device *dev, int phy_id, int location,
543 int val)
544 {
545 struct rtl8169_private *tp = netdev_priv(dev);
546 void __iomem *ioaddr = tp->mmio_addr;
547
548 mdio_write(ioaddr, location, val);
549 }
550
551 static int rtl_mdio_read(struct net_device *dev, int phy_id, int location)
552 {
553 struct rtl8169_private *tp = netdev_priv(dev);
554 void __iomem *ioaddr = tp->mmio_addr;
555
556 return mdio_read(ioaddr, location);
557 }
558
559 static void rtl_ephy_write(void __iomem *ioaddr, int reg_addr, int value)
560 {
561 unsigned int i;
562
563 RTL_W32(EPHYAR, EPHYAR_WRITE_CMD | (value & EPHYAR_DATA_MASK) |
564 (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
565
566 for (i = 0; i < 100; i++) {
567 if (!(RTL_R32(EPHYAR) & EPHYAR_FLAG))
568 break;
569 udelay(10);
570 }
571 }
572
573 static u16 rtl_ephy_read(void __iomem *ioaddr, int reg_addr)
574 {
575 u16 value = 0xffff;
576 unsigned int i;
577
578 RTL_W32(EPHYAR, (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
579
580 for (i = 0; i < 100; i++) {
581 if (RTL_R32(EPHYAR) & EPHYAR_FLAG) {
582 value = RTL_R32(EPHYAR) & EPHYAR_DATA_MASK;
583 break;
584 }
585 udelay(10);
586 }
587
588 return value;
589 }
590
591 static void rtl_csi_write(void __iomem *ioaddr, int addr, int value)
592 {
593 unsigned int i;
594
595 RTL_W32(CSIDR, value);
596 RTL_W32(CSIAR, CSIAR_WRITE_CMD | (addr & CSIAR_ADDR_MASK) |
597 CSIAR_BYTE_ENABLE << CSIAR_BYTE_ENABLE_SHIFT);
598
599 for (i = 0; i < 100; i++) {
600 if (!(RTL_R32(CSIAR) & CSIAR_FLAG))
601 break;
602 udelay(10);
603 }
604 }
605
606 static u32 rtl_csi_read(void __iomem *ioaddr, int addr)
607 {
608 u32 value = ~0x00;
609 unsigned int i;
610
611 RTL_W32(CSIAR, (addr & CSIAR_ADDR_MASK) |
612 CSIAR_BYTE_ENABLE << CSIAR_BYTE_ENABLE_SHIFT);
613
614 for (i = 0; i < 100; i++) {
615 if (RTL_R32(CSIAR) & CSIAR_FLAG) {
616 value = RTL_R32(CSIDR);
617 break;
618 }
619 udelay(10);
620 }
621
622 return value;
623 }
624
625 static void rtl8169_irq_mask_and_ack(void __iomem *ioaddr)
626 {
627 RTL_W16(IntrMask, 0x0000);
628
629 RTL_W16(IntrStatus, 0xffff);
630 }
631
632 static void rtl8169_asic_down(void __iomem *ioaddr)
633 {
634 RTL_W8(ChipCmd, 0x00);
635 rtl8169_irq_mask_and_ack(ioaddr);
636 RTL_R16(CPlusCmd);
637 }
638
639 static unsigned int rtl8169_tbi_reset_pending(void __iomem *ioaddr)
640 {
641 return RTL_R32(TBICSR) & TBIReset;
642 }
643
644 static unsigned int rtl8169_xmii_reset_pending(void __iomem *ioaddr)
645 {
646 return mdio_read(ioaddr, MII_BMCR) & BMCR_RESET;
647 }
648
649 static unsigned int rtl8169_tbi_link_ok(void __iomem *ioaddr)
650 {
651 return RTL_R32(TBICSR) & TBILinkOk;
652 }
653
654 static unsigned int rtl8169_xmii_link_ok(void __iomem *ioaddr)
655 {
656 return RTL_R8(PHYstatus) & LinkStatus;
657 }
658
659 static void rtl8169_tbi_reset_enable(void __iomem *ioaddr)
660 {
661 RTL_W32(TBICSR, RTL_R32(TBICSR) | TBIReset);
662 }
663
664 static void rtl8169_xmii_reset_enable(void __iomem *ioaddr)
665 {
666 unsigned int val;
667
668 val = mdio_read(ioaddr, MII_BMCR) | BMCR_RESET;
669 mdio_write(ioaddr, MII_BMCR, val & 0xffff);
670 }
671
672 static void rtl8169_check_link_status(struct net_device *dev,
673 struct rtl8169_private *tp,
674 void __iomem *ioaddr)
675 {
676 unsigned long flags;
677
678 spin_lock_irqsave(&tp->lock, flags);
679 if (tp->link_ok(ioaddr)) {
680 netif_carrier_on(dev);
681 if (netif_msg_ifup(tp))
682 printk(KERN_INFO PFX "%s: link up\n", dev->name);
683 } else {
684 if (netif_msg_ifdown(tp))
685 printk(KERN_INFO PFX "%s: link down\n", dev->name);
686 netif_carrier_off(dev);
687 }
688 spin_unlock_irqrestore(&tp->lock, flags);
689 }
690
691 static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
692 {
693 struct rtl8169_private *tp = netdev_priv(dev);
694 void __iomem *ioaddr = tp->mmio_addr;
695 u8 options;
696
697 wol->wolopts = 0;
698
699 #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
700 wol->supported = WAKE_ANY;
701
702 spin_lock_irq(&tp->lock);
703
704 options = RTL_R8(Config1);
705 if (!(options & PMEnable))
706 goto out_unlock;
707
708 options = RTL_R8(Config3);
709 if (options & LinkUp)
710 wol->wolopts |= WAKE_PHY;
711 if (options & MagicPacket)
712 wol->wolopts |= WAKE_MAGIC;
713
714 options = RTL_R8(Config5);
715 if (options & UWF)
716 wol->wolopts |= WAKE_UCAST;
717 if (options & BWF)
718 wol->wolopts |= WAKE_BCAST;
719 if (options & MWF)
720 wol->wolopts |= WAKE_MCAST;
721
722 out_unlock:
723 spin_unlock_irq(&tp->lock);
724 }
725
726 static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
727 {
728 struct rtl8169_private *tp = netdev_priv(dev);
729 void __iomem *ioaddr = tp->mmio_addr;
730 unsigned int i;
731 static struct {
732 u32 opt;
733 u16 reg;
734 u8 mask;
735 } cfg[] = {
736 { WAKE_ANY, Config1, PMEnable },
737 { WAKE_PHY, Config3, LinkUp },
738 { WAKE_MAGIC, Config3, MagicPacket },
739 { WAKE_UCAST, Config5, UWF },
740 { WAKE_BCAST, Config5, BWF },
741 { WAKE_MCAST, Config5, MWF },
742 { WAKE_ANY, Config5, LanWake }
743 };
744
745 spin_lock_irq(&tp->lock);
746
747 RTL_W8(Cfg9346, Cfg9346_Unlock);
748
749 for (i = 0; i < ARRAY_SIZE(cfg); i++) {
750 u8 options = RTL_R8(cfg[i].reg) & ~cfg[i].mask;
751 if (wol->wolopts & cfg[i].opt)
752 options |= cfg[i].mask;
753 RTL_W8(cfg[i].reg, options);
754 }
755
756 RTL_W8(Cfg9346, Cfg9346_Lock);
757
758 if (wol->wolopts)
759 tp->features |= RTL_FEATURE_WOL;
760 else
761 tp->features &= ~RTL_FEATURE_WOL;
762
763 spin_unlock_irq(&tp->lock);
764
765 return 0;
766 }
767
768 static void rtl8169_get_drvinfo(struct net_device *dev,
769 struct ethtool_drvinfo *info)
770 {
771 struct rtl8169_private *tp = netdev_priv(dev);
772
773 strcpy(info->driver, MODULENAME);
774 strcpy(info->version, RTL8169_VERSION);
775 strcpy(info->bus_info, pci_name(tp->pci_dev));
776 }
777
778 static int rtl8169_get_regs_len(struct net_device *dev)
779 {
780 return R8169_REGS_SIZE;
781 }
782
783 static int rtl8169_set_speed_tbi(struct net_device *dev,
784 u8 autoneg, u16 speed, u8 duplex)
785 {
786 struct rtl8169_private *tp = netdev_priv(dev);
787 void __iomem *ioaddr = tp->mmio_addr;
788 int ret = 0;
789 u32 reg;
790
791 reg = RTL_R32(TBICSR);
792 if ((autoneg == AUTONEG_DISABLE) && (speed == SPEED_1000) &&
793 (duplex == DUPLEX_FULL)) {
794 RTL_W32(TBICSR, reg & ~(TBINwEnable | TBINwRestart));
795 } else if (autoneg == AUTONEG_ENABLE)
796 RTL_W32(TBICSR, reg | TBINwEnable | TBINwRestart);
797 else {
798 if (netif_msg_link(tp)) {
799 printk(KERN_WARNING "%s: "
800 "incorrect speed setting refused in TBI mode\n",
801 dev->name);
802 }
803 ret = -EOPNOTSUPP;
804 }
805
806 return ret;
807 }
808
809 static int rtl8169_set_speed_xmii(struct net_device *dev,
810 u8 autoneg, u16 speed, u8 duplex)
811 {
812 struct rtl8169_private *tp = netdev_priv(dev);
813 void __iomem *ioaddr = tp->mmio_addr;
814 int auto_nego, giga_ctrl;
815
816 auto_nego = mdio_read(ioaddr, MII_ADVERTISE);
817 auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL |
818 ADVERTISE_100HALF | ADVERTISE_100FULL);
819 giga_ctrl = mdio_read(ioaddr, MII_CTRL1000);
820 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
821
822 if (autoneg == AUTONEG_ENABLE) {
823 auto_nego |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
824 ADVERTISE_100HALF | ADVERTISE_100FULL);
825 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
826 } else {
827 if (speed == SPEED_10)
828 auto_nego |= ADVERTISE_10HALF | ADVERTISE_10FULL;
829 else if (speed == SPEED_100)
830 auto_nego |= ADVERTISE_100HALF | ADVERTISE_100FULL;
831 else if (speed == SPEED_1000)
832 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
833
834 if (duplex == DUPLEX_HALF)
835 auto_nego &= ~(ADVERTISE_10FULL | ADVERTISE_100FULL);
836
837 if (duplex == DUPLEX_FULL)
838 auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_100HALF);
839
840 /* This tweak comes straight from Realtek's driver. */
841 if ((speed == SPEED_100) && (duplex == DUPLEX_HALF) &&
842 ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
843 (tp->mac_version == RTL_GIGA_MAC_VER_16))) {
844 auto_nego = ADVERTISE_100HALF | ADVERTISE_CSMA;
845 }
846 }
847
848 /* The 8100e/8101e/8102e do Fast Ethernet only. */
849 if ((tp->mac_version == RTL_GIGA_MAC_VER_07) ||
850 (tp->mac_version == RTL_GIGA_MAC_VER_08) ||
851 (tp->mac_version == RTL_GIGA_MAC_VER_09) ||
852 (tp->mac_version == RTL_GIGA_MAC_VER_10) ||
853 (tp->mac_version == RTL_GIGA_MAC_VER_13) ||
854 (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
855 (tp->mac_version == RTL_GIGA_MAC_VER_15) ||
856 (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
857 if ((giga_ctrl & (ADVERTISE_1000FULL | ADVERTISE_1000HALF)) &&
858 netif_msg_link(tp)) {
859 printk(KERN_INFO "%s: PHY does not support 1000Mbps.\n",
860 dev->name);
861 }
862 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
863 }
864
865 auto_nego |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
866
867 if ((tp->mac_version == RTL_GIGA_MAC_VER_12) ||
868 (tp->mac_version == RTL_GIGA_MAC_VER_17)) {
869 /* Vendor specific (0x1f) and reserved (0x0e) MII registers. */
870 mdio_write(ioaddr, 0x1f, 0x0000);
871 mdio_write(ioaddr, 0x0e, 0x0000);
872 }
873
874 tp->phy_auto_nego_reg = auto_nego;
875 tp->phy_1000_ctrl_reg = giga_ctrl;
876
877 mdio_write(ioaddr, MII_ADVERTISE, auto_nego);
878 mdio_write(ioaddr, MII_CTRL1000, giga_ctrl);
879 mdio_write(ioaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
880 return 0;
881 }
882
883 static int rtl8169_set_speed(struct net_device *dev,
884 u8 autoneg, u16 speed, u8 duplex)
885 {
886 struct rtl8169_private *tp = netdev_priv(dev);
887 int ret;
888
889 ret = tp->set_speed(dev, autoneg, speed, duplex);
890
891 if (netif_running(dev) && (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
892 mod_timer(&tp->timer, jiffies + RTL8169_PHY_TIMEOUT);
893
894 return ret;
895 }
896
897 static int rtl8169_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
898 {
899 struct rtl8169_private *tp = netdev_priv(dev);
900 unsigned long flags;
901 int ret;
902
903 spin_lock_irqsave(&tp->lock, flags);
904 ret = rtl8169_set_speed(dev, cmd->autoneg, cmd->speed, cmd->duplex);
905 spin_unlock_irqrestore(&tp->lock, flags);
906
907 return ret;
908 }
909
910 static u32 rtl8169_get_rx_csum(struct net_device *dev)
911 {
912 struct rtl8169_private *tp = netdev_priv(dev);
913
914 return tp->cp_cmd & RxChkSum;
915 }
916
917 static int rtl8169_set_rx_csum(struct net_device *dev, u32 data)
918 {
919 struct rtl8169_private *tp = netdev_priv(dev);
920 void __iomem *ioaddr = tp->mmio_addr;
921 unsigned long flags;
922
923 spin_lock_irqsave(&tp->lock, flags);
924
925 if (data)
926 tp->cp_cmd |= RxChkSum;
927 else
928 tp->cp_cmd &= ~RxChkSum;
929
930 RTL_W16(CPlusCmd, tp->cp_cmd);
931 RTL_R16(CPlusCmd);
932
933 spin_unlock_irqrestore(&tp->lock, flags);
934
935 return 0;
936 }
937
938 #ifdef CONFIG_R8169_VLAN
939
940 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
941 struct sk_buff *skb)
942 {
943 return (tp->vlgrp && vlan_tx_tag_present(skb)) ?
944 TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00;
945 }
946
947 static void rtl8169_vlan_rx_register(struct net_device *dev,
948 struct vlan_group *grp)
949 {
950 struct rtl8169_private *tp = netdev_priv(dev);
951 void __iomem *ioaddr = tp->mmio_addr;
952 unsigned long flags;
953
954 spin_lock_irqsave(&tp->lock, flags);
955 tp->vlgrp = grp;
956 if (tp->vlgrp)
957 tp->cp_cmd |= RxVlan;
958 else
959 tp->cp_cmd &= ~RxVlan;
960 RTL_W16(CPlusCmd, tp->cp_cmd);
961 RTL_R16(CPlusCmd);
962 spin_unlock_irqrestore(&tp->lock, flags);
963 }
964
965 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
966 struct sk_buff *skb)
967 {
968 u32 opts2 = le32_to_cpu(desc->opts2);
969 struct vlan_group *vlgrp = tp->vlgrp;
970 int ret;
971
972 if (vlgrp && (opts2 & RxVlanTag)) {
973 vlan_hwaccel_receive_skb(skb, vlgrp, swab16(opts2 & 0xffff));
974 ret = 0;
975 } else
976 ret = -1;
977 desc->opts2 = 0;
978 return ret;
979 }
980
981 #else /* !CONFIG_R8169_VLAN */
982
983 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
984 struct sk_buff *skb)
985 {
986 return 0;
987 }
988
989 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
990 struct sk_buff *skb)
991 {
992 return -1;
993 }
994
995 #endif
996
997 static int rtl8169_gset_tbi(struct net_device *dev, struct ethtool_cmd *cmd)
998 {
999 struct rtl8169_private *tp = netdev_priv(dev);
1000 void __iomem *ioaddr = tp->mmio_addr;
1001 u32 status;
1002
1003 cmd->supported =
1004 SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE;
1005 cmd->port = PORT_FIBRE;
1006 cmd->transceiver = XCVR_INTERNAL;
1007
1008 status = RTL_R32(TBICSR);
1009 cmd->advertising = (status & TBINwEnable) ? ADVERTISED_Autoneg : 0;
1010 cmd->autoneg = !!(status & TBINwEnable);
1011
1012 cmd->speed = SPEED_1000;
1013 cmd->duplex = DUPLEX_FULL; /* Always set */
1014
1015 return 0;
1016 }
1017
1018 static int rtl8169_gset_xmii(struct net_device *dev, struct ethtool_cmd *cmd)
1019 {
1020 struct rtl8169_private *tp = netdev_priv(dev);
1021
1022 return mii_ethtool_gset(&tp->mii, cmd);
1023 }
1024
1025 static int rtl8169_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1026 {
1027 struct rtl8169_private *tp = netdev_priv(dev);
1028 unsigned long flags;
1029 int rc;
1030
1031 spin_lock_irqsave(&tp->lock, flags);
1032
1033 rc = tp->get_settings(dev, cmd);
1034
1035 spin_unlock_irqrestore(&tp->lock, flags);
1036 return rc;
1037 }
1038
1039 static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1040 void *p)
1041 {
1042 struct rtl8169_private *tp = netdev_priv(dev);
1043 unsigned long flags;
1044
1045 if (regs->len > R8169_REGS_SIZE)
1046 regs->len = R8169_REGS_SIZE;
1047
1048 spin_lock_irqsave(&tp->lock, flags);
1049 memcpy_fromio(p, tp->mmio_addr, regs->len);
1050 spin_unlock_irqrestore(&tp->lock, flags);
1051 }
1052
1053 static u32 rtl8169_get_msglevel(struct net_device *dev)
1054 {
1055 struct rtl8169_private *tp = netdev_priv(dev);
1056
1057 return tp->msg_enable;
1058 }
1059
1060 static void rtl8169_set_msglevel(struct net_device *dev, u32 value)
1061 {
1062 struct rtl8169_private *tp = netdev_priv(dev);
1063
1064 tp->msg_enable = value;
1065 }
1066
1067 static const char rtl8169_gstrings[][ETH_GSTRING_LEN] = {
1068 "tx_packets",
1069 "rx_packets",
1070 "tx_errors",
1071 "rx_errors",
1072 "rx_missed",
1073 "align_errors",
1074 "tx_single_collisions",
1075 "tx_multi_collisions",
1076 "unicast",
1077 "broadcast",
1078 "multicast",
1079 "tx_aborted",
1080 "tx_underrun",
1081 };
1082
1083 struct rtl8169_counters {
1084 __le64 tx_packets;
1085 __le64 rx_packets;
1086 __le64 tx_errors;
1087 __le32 rx_errors;
1088 __le16 rx_missed;
1089 __le16 align_errors;
1090 __le32 tx_one_collision;
1091 __le32 tx_multi_collision;
1092 __le64 rx_unicast;
1093 __le64 rx_broadcast;
1094 __le32 rx_multicast;
1095 __le16 tx_aborted;
1096 __le16 tx_underun;
1097 };
1098
1099 static int rtl8169_get_sset_count(struct net_device *dev, int sset)
1100 {
1101 switch (sset) {
1102 case ETH_SS_STATS:
1103 return ARRAY_SIZE(rtl8169_gstrings);
1104 default:
1105 return -EOPNOTSUPP;
1106 }
1107 }
1108
1109 static void rtl8169_get_ethtool_stats(struct net_device *dev,
1110 struct ethtool_stats *stats, u64 *data)
1111 {
1112 struct rtl8169_private *tp = netdev_priv(dev);
1113 void __iomem *ioaddr = tp->mmio_addr;
1114 struct rtl8169_counters *counters;
1115 dma_addr_t paddr;
1116 u32 cmd;
1117
1118 ASSERT_RTNL();
1119
1120 counters = pci_alloc_consistent(tp->pci_dev, sizeof(*counters), &paddr);
1121 if (!counters)
1122 return;
1123
1124 RTL_W32(CounterAddrHigh, (u64)paddr >> 32);
1125 cmd = (u64)paddr & DMA_32BIT_MASK;
1126 RTL_W32(CounterAddrLow, cmd);
1127 RTL_W32(CounterAddrLow, cmd | CounterDump);
1128
1129 while (RTL_R32(CounterAddrLow) & CounterDump) {
1130 if (msleep_interruptible(1))
1131 break;
1132 }
1133
1134 RTL_W32(CounterAddrLow, 0);
1135 RTL_W32(CounterAddrHigh, 0);
1136
1137 data[0] = le64_to_cpu(counters->tx_packets);
1138 data[1] = le64_to_cpu(counters->rx_packets);
1139 data[2] = le64_to_cpu(counters->tx_errors);
1140 data[3] = le32_to_cpu(counters->rx_errors);
1141 data[4] = le16_to_cpu(counters->rx_missed);
1142 data[5] = le16_to_cpu(counters->align_errors);
1143 data[6] = le32_to_cpu(counters->tx_one_collision);
1144 data[7] = le32_to_cpu(counters->tx_multi_collision);
1145 data[8] = le64_to_cpu(counters->rx_unicast);
1146 data[9] = le64_to_cpu(counters->rx_broadcast);
1147 data[10] = le32_to_cpu(counters->rx_multicast);
1148 data[11] = le16_to_cpu(counters->tx_aborted);
1149 data[12] = le16_to_cpu(counters->tx_underun);
1150
1151 pci_free_consistent(tp->pci_dev, sizeof(*counters), counters, paddr);
1152 }
1153
1154 static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1155 {
1156 switch(stringset) {
1157 case ETH_SS_STATS:
1158 memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings));
1159 break;
1160 }
1161 }
1162
1163 static const struct ethtool_ops rtl8169_ethtool_ops = {
1164 .get_drvinfo = rtl8169_get_drvinfo,
1165 .get_regs_len = rtl8169_get_regs_len,
1166 .get_link = ethtool_op_get_link,
1167 .get_settings = rtl8169_get_settings,
1168 .set_settings = rtl8169_set_settings,
1169 .get_msglevel = rtl8169_get_msglevel,
1170 .set_msglevel = rtl8169_set_msglevel,
1171 .get_rx_csum = rtl8169_get_rx_csum,
1172 .set_rx_csum = rtl8169_set_rx_csum,
1173 .set_tx_csum = ethtool_op_set_tx_csum,
1174 .set_sg = ethtool_op_set_sg,
1175 .set_tso = ethtool_op_set_tso,
1176 .get_regs = rtl8169_get_regs,
1177 .get_wol = rtl8169_get_wol,
1178 .set_wol = rtl8169_set_wol,
1179 .get_strings = rtl8169_get_strings,
1180 .get_sset_count = rtl8169_get_sset_count,
1181 .get_ethtool_stats = rtl8169_get_ethtool_stats,
1182 };
1183
1184 static void rtl8169_write_gmii_reg_bit(void __iomem *ioaddr, int reg,
1185 int bitnum, int bitval)
1186 {
1187 int val;
1188
1189 val = mdio_read(ioaddr, reg);
1190 val = (bitval == 1) ?
1191 val | (bitval << bitnum) : val & ~(0x0001 << bitnum);
1192 mdio_write(ioaddr, reg, val & 0xffff);
1193 }
1194
1195 static void rtl8169_get_mac_version(struct rtl8169_private *tp,
1196 void __iomem *ioaddr)
1197 {
1198 /*
1199 * The driver currently handles the 8168Bf and the 8168Be identically
1200 * but they can be identified more specifically through the test below
1201 * if needed:
1202 *
1203 * (RTL_R32(TxConfig) & 0x700000) == 0x500000 ? 8168Bf : 8168Be
1204 *
1205 * Same thing for the 8101Eb and the 8101Ec:
1206 *
1207 * (RTL_R32(TxConfig) & 0x700000) == 0x200000 ? 8101Eb : 8101Ec
1208 */
1209 const struct {
1210 u32 mask;
1211 u32 val;
1212 int mac_version;
1213 } mac_info[] = {
1214 /* 8168B family. */
1215 { 0x7c800000, 0x3c800000, RTL_GIGA_MAC_VER_18 },
1216 { 0x7cf00000, 0x3c000000, RTL_GIGA_MAC_VER_19 },
1217 { 0x7cf00000, 0x3c200000, RTL_GIGA_MAC_VER_20 },
1218 { 0x7c800000, 0x3c000000, RTL_GIGA_MAC_VER_20 },
1219
1220 /* 8168B family. */
1221 { 0x7cf00000, 0x38000000, RTL_GIGA_MAC_VER_12 },
1222 { 0x7cf00000, 0x38500000, RTL_GIGA_MAC_VER_17 },
1223 { 0x7c800000, 0x38000000, RTL_GIGA_MAC_VER_17 },
1224 { 0x7c800000, 0x30000000, RTL_GIGA_MAC_VER_11 },
1225
1226 /* 8101 family. */
1227 { 0x7cf00000, 0x34a00000, RTL_GIGA_MAC_VER_09 },
1228 { 0x7cf00000, 0x24a00000, RTL_GIGA_MAC_VER_09 },
1229 { 0x7cf00000, 0x34900000, RTL_GIGA_MAC_VER_08 },
1230 { 0x7cf00000, 0x24900000, RTL_GIGA_MAC_VER_08 },
1231 { 0x7cf00000, 0x34800000, RTL_GIGA_MAC_VER_07 },
1232 { 0x7cf00000, 0x24800000, RTL_GIGA_MAC_VER_07 },
1233 { 0x7cf00000, 0x34000000, RTL_GIGA_MAC_VER_13 },
1234 { 0x7cf00000, 0x34300000, RTL_GIGA_MAC_VER_10 },
1235 { 0x7cf00000, 0x34200000, RTL_GIGA_MAC_VER_16 },
1236 { 0x7c800000, 0x34800000, RTL_GIGA_MAC_VER_09 },
1237 { 0x7c800000, 0x24800000, RTL_GIGA_MAC_VER_09 },
1238 { 0x7c800000, 0x34000000, RTL_GIGA_MAC_VER_16 },
1239 /* FIXME: where did these entries come from ? -- FR */
1240 { 0xfc800000, 0x38800000, RTL_GIGA_MAC_VER_15 },
1241 { 0xfc800000, 0x30800000, RTL_GIGA_MAC_VER_14 },
1242
1243 /* 8110 family. */
1244 { 0xfc800000, 0x98000000, RTL_GIGA_MAC_VER_06 },
1245 { 0xfc800000, 0x18000000, RTL_GIGA_MAC_VER_05 },
1246 { 0xfc800000, 0x10000000, RTL_GIGA_MAC_VER_04 },
1247 { 0xfc800000, 0x04000000, RTL_GIGA_MAC_VER_03 },
1248 { 0xfc800000, 0x00800000, RTL_GIGA_MAC_VER_02 },
1249 { 0xfc800000, 0x00000000, RTL_GIGA_MAC_VER_01 },
1250
1251 { 0x00000000, 0x00000000, RTL_GIGA_MAC_VER_01 } /* Catch-all */
1252 }, *p = mac_info;
1253 u32 reg;
1254
1255 reg = RTL_R32(TxConfig);
1256 while ((reg & p->mask) != p->val)
1257 p++;
1258 tp->mac_version = p->mac_version;
1259
1260 if (p->mask == 0x00000000) {
1261 struct pci_dev *pdev = tp->pci_dev;
1262
1263 dev_info(&pdev->dev, "unknown MAC (%08x)\n", reg);
1264 }
1265 }
1266
1267 static void rtl8169_print_mac_version(struct rtl8169_private *tp)
1268 {
1269 dprintk("mac_version = 0x%02x\n", tp->mac_version);
1270 }
1271
1272 struct phy_reg {
1273 u16 reg;
1274 u16 val;
1275 };
1276
1277 static void rtl_phy_write(void __iomem *ioaddr, struct phy_reg *regs, int len)
1278 {
1279 while (len-- > 0) {
1280 mdio_write(ioaddr, regs->reg, regs->val);
1281 regs++;
1282 }
1283 }
1284
1285 static void rtl8169s_hw_phy_config(void __iomem *ioaddr)
1286 {
1287 struct {
1288 u16 regs[5]; /* Beware of bit-sign propagation */
1289 } phy_magic[5] = { {
1290 { 0x0000, //w 4 15 12 0
1291 0x00a1, //w 3 15 0 00a1
1292 0x0008, //w 2 15 0 0008
1293 0x1020, //w 1 15 0 1020
1294 0x1000 } },{ //w 0 15 0 1000
1295 { 0x7000, //w 4 15 12 7
1296 0xff41, //w 3 15 0 ff41
1297 0xde60, //w 2 15 0 de60
1298 0x0140, //w 1 15 0 0140
1299 0x0077 } },{ //w 0 15 0 0077
1300 { 0xa000, //w 4 15 12 a
1301 0xdf01, //w 3 15 0 df01
1302 0xdf20, //w 2 15 0 df20
1303 0xff95, //w 1 15 0 ff95
1304 0xfa00 } },{ //w 0 15 0 fa00
1305 { 0xb000, //w 4 15 12 b
1306 0xff41, //w 3 15 0 ff41
1307 0xde20, //w 2 15 0 de20
1308 0x0140, //w 1 15 0 0140
1309 0x00bb } },{ //w 0 15 0 00bb
1310 { 0xf000, //w 4 15 12 f
1311 0xdf01, //w 3 15 0 df01
1312 0xdf20, //w 2 15 0 df20
1313 0xff95, //w 1 15 0 ff95
1314 0xbf00 } //w 0 15 0 bf00
1315 }
1316 }, *p = phy_magic;
1317 unsigned int i;
1318
1319 mdio_write(ioaddr, 0x1f, 0x0001); //w 31 2 0 1
1320 mdio_write(ioaddr, 0x15, 0x1000); //w 21 15 0 1000
1321 mdio_write(ioaddr, 0x18, 0x65c7); //w 24 15 0 65c7
1322 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1323
1324 for (i = 0; i < ARRAY_SIZE(phy_magic); i++, p++) {
1325 int val, pos = 4;
1326
1327 val = (mdio_read(ioaddr, pos) & 0x0fff) | (p->regs[0] & 0xffff);
1328 mdio_write(ioaddr, pos, val);
1329 while (--pos >= 0)
1330 mdio_write(ioaddr, pos, p->regs[4 - pos] & 0xffff);
1331 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 1); //w 4 11 11 1
1332 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1333 }
1334 mdio_write(ioaddr, 0x1f, 0x0000); //w 31 2 0 0
1335 }
1336
1337 static void rtl8169sb_hw_phy_config(void __iomem *ioaddr)
1338 {
1339 struct phy_reg phy_reg_init[] = {
1340 { 0x1f, 0x0002 },
1341 { 0x01, 0x90d0 },
1342 { 0x1f, 0x0000 }
1343 };
1344
1345 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1346 }
1347
1348 static void rtl8168cp_hw_phy_config(void __iomem *ioaddr)
1349 {
1350 struct phy_reg phy_reg_init[] = {
1351 { 0x1f, 0x0000 },
1352 { 0x1d, 0x0f00 },
1353 { 0x1f, 0x0002 },
1354 { 0x0c, 0x1ec8 },
1355 { 0x1f, 0x0000 }
1356 };
1357
1358 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1359 }
1360
1361 static void rtl8168c_hw_phy_config(void __iomem *ioaddr)
1362 {
1363 struct phy_reg phy_reg_init[] = {
1364 { 0x1f, 0x0001 },
1365 { 0x12, 0x2300 },
1366 { 0x1f, 0x0002 },
1367 { 0x00, 0x88d4 },
1368 { 0x01, 0x82b1 },
1369 { 0x03, 0x7002 },
1370 { 0x08, 0x9e30 },
1371 { 0x09, 0x01f0 },
1372 { 0x0a, 0x5500 },
1373 { 0x0c, 0x00c8 },
1374 { 0x1f, 0x0003 },
1375 { 0x12, 0xc096 },
1376 { 0x16, 0x000a },
1377 { 0x1f, 0x0000 }
1378 };
1379
1380 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1381 }
1382
1383 static void rtl8168cx_hw_phy_config(void __iomem *ioaddr)
1384 {
1385 struct phy_reg phy_reg_init[] = {
1386 { 0x1f, 0x0000 },
1387 { 0x12, 0x2300 },
1388 { 0x1f, 0x0003 },
1389 { 0x16, 0x0f0a },
1390 { 0x1f, 0x0000 },
1391 { 0x1f, 0x0002 },
1392 { 0x0c, 0x7eb8 },
1393 { 0x1f, 0x0000 }
1394 };
1395
1396 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1397 }
1398
1399 static void rtl8102e_hw_phy_config(void __iomem *ioaddr)
1400 {
1401 struct phy_reg phy_reg_init[] = {
1402 { 0x1f, 0x0003 },
1403 { 0x08, 0x441d },
1404 { 0x01, 0x9100 },
1405 { 0x1f, 0x0000 }
1406 };
1407
1408 mdio_write(ioaddr, 0x1f, 0x0000);
1409 mdio_patch(ioaddr, 0x11, 1 << 12);
1410 mdio_patch(ioaddr, 0x19, 1 << 13);
1411
1412 rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1413 }
1414
1415 static void rtl_hw_phy_config(struct net_device *dev)
1416 {
1417 struct rtl8169_private *tp = netdev_priv(dev);
1418 void __iomem *ioaddr = tp->mmio_addr;
1419
1420 rtl8169_print_mac_version(tp);
1421
1422 switch (tp->mac_version) {
1423 case RTL_GIGA_MAC_VER_01:
1424 break;
1425 case RTL_GIGA_MAC_VER_02:
1426 case RTL_GIGA_MAC_VER_03:
1427 rtl8169s_hw_phy_config(ioaddr);
1428 break;
1429 case RTL_GIGA_MAC_VER_04:
1430 rtl8169sb_hw_phy_config(ioaddr);
1431 break;
1432 case RTL_GIGA_MAC_VER_07:
1433 case RTL_GIGA_MAC_VER_08:
1434 case RTL_GIGA_MAC_VER_09:
1435 rtl8102e_hw_phy_config(ioaddr);
1436 break;
1437 case RTL_GIGA_MAC_VER_18:
1438 rtl8168cp_hw_phy_config(ioaddr);
1439 break;
1440 case RTL_GIGA_MAC_VER_19:
1441 rtl8168c_hw_phy_config(ioaddr);
1442 break;
1443 case RTL_GIGA_MAC_VER_20:
1444 rtl8168cx_hw_phy_config(ioaddr);
1445 break;
1446 default:
1447 break;
1448 }
1449 }
1450
1451 static void rtl8169_phy_timer(unsigned long __opaque)
1452 {
1453 struct net_device *dev = (struct net_device *)__opaque;
1454 struct rtl8169_private *tp = netdev_priv(dev);
1455 struct timer_list *timer = &tp->timer;
1456 void __iomem *ioaddr = tp->mmio_addr;
1457 unsigned long timeout = RTL8169_PHY_TIMEOUT;
1458
1459 assert(tp->mac_version > RTL_GIGA_MAC_VER_01);
1460
1461 if (!(tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
1462 return;
1463
1464 spin_lock_irq(&tp->lock);
1465
1466 if (tp->phy_reset_pending(ioaddr)) {
1467 /*
1468 * A busy loop could burn quite a few cycles on nowadays CPU.
1469 * Let's delay the execution of the timer for a few ticks.
1470 */
1471 timeout = HZ/10;
1472 goto out_mod_timer;
1473 }
1474
1475 if (tp->link_ok(ioaddr))
1476 goto out_unlock;
1477
1478 if (netif_msg_link(tp))
1479 printk(KERN_WARNING "%s: PHY reset until link up\n", dev->name);
1480
1481 tp->phy_reset_enable(ioaddr);
1482
1483 out_mod_timer:
1484 mod_timer(timer, jiffies + timeout);
1485 out_unlock:
1486 spin_unlock_irq(&tp->lock);
1487 }
1488
1489 static inline void rtl8169_delete_timer(struct net_device *dev)
1490 {
1491 struct rtl8169_private *tp = netdev_priv(dev);
1492 struct timer_list *timer = &tp->timer;
1493
1494 if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1495 return;
1496
1497 del_timer_sync(timer);
1498 }
1499
1500 static inline void rtl8169_request_timer(struct net_device *dev)
1501 {
1502 struct rtl8169_private *tp = netdev_priv(dev);
1503 struct timer_list *timer = &tp->timer;
1504
1505 if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1506 return;
1507
1508 mod_timer(timer, jiffies + RTL8169_PHY_TIMEOUT);
1509 }
1510
1511 #ifdef CONFIG_NET_POLL_CONTROLLER
1512 /*
1513 * Polling 'interrupt' - used by things like netconsole to send skbs
1514 * without having to re-enable interrupts. It's not called while
1515 * the interrupt routine is executing.
1516 */
1517 static void rtl8169_netpoll(struct net_device *dev)
1518 {
1519 struct rtl8169_private *tp = netdev_priv(dev);
1520 struct pci_dev *pdev = tp->pci_dev;
1521
1522 disable_irq(pdev->irq);
1523 rtl8169_interrupt(pdev->irq, dev);
1524 enable_irq(pdev->irq);
1525 }
1526 #endif
1527
1528 static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
1529 void __iomem *ioaddr)
1530 {
1531 iounmap(ioaddr);
1532 pci_release_regions(pdev);
1533 pci_disable_device(pdev);
1534 free_netdev(dev);
1535 }
1536
1537 static void rtl8169_phy_reset(struct net_device *dev,
1538 struct rtl8169_private *tp)
1539 {
1540 void __iomem *ioaddr = tp->mmio_addr;
1541 unsigned int i;
1542
1543 tp->phy_reset_enable(ioaddr);
1544 for (i = 0; i < 100; i++) {
1545 if (!tp->phy_reset_pending(ioaddr))
1546 return;
1547 msleep(1);
1548 }
1549 if (netif_msg_link(tp))
1550 printk(KERN_ERR "%s: PHY reset failed.\n", dev->name);
1551 }
1552
1553 static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp)
1554 {
1555 void __iomem *ioaddr = tp->mmio_addr;
1556
1557 rtl_hw_phy_config(dev);
1558
1559 if (tp->mac_version <= RTL_GIGA_MAC_VER_06) {
1560 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1561 RTL_W8(0x82, 0x01);
1562 }
1563
1564 pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40);
1565
1566 if (tp->mac_version <= RTL_GIGA_MAC_VER_06)
1567 pci_write_config_byte(tp->pci_dev, PCI_CACHE_LINE_SIZE, 0x08);
1568
1569 if (tp->mac_version == RTL_GIGA_MAC_VER_02) {
1570 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1571 RTL_W8(0x82, 0x01);
1572 dprintk("Set PHY Reg 0x0bh = 0x00h\n");
1573 mdio_write(ioaddr, 0x0b, 0x0000); //w 0x0b 15 0 0
1574 }
1575
1576 rtl8169_phy_reset(dev, tp);
1577
1578 /*
1579 * rtl8169_set_speed_xmii takes good care of the Fast Ethernet
1580 * only 8101. Don't panic.
1581 */
1582 rtl8169_set_speed(dev, AUTONEG_ENABLE, SPEED_1000, DUPLEX_FULL);
1583
1584 if ((RTL_R8(PHYstatus) & TBI_Enable) && netif_msg_link(tp))
1585 printk(KERN_INFO PFX "%s: TBI auto-negotiating\n", dev->name);
1586 }
1587
1588 static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
1589 {
1590 void __iomem *ioaddr = tp->mmio_addr;
1591 u32 high;
1592 u32 low;
1593
1594 low = addr[0] | (addr[1] << 8) | (addr[2] << 16) | (addr[3] << 24);
1595 high = addr[4] | (addr[5] << 8);
1596
1597 spin_lock_irq(&tp->lock);
1598
1599 RTL_W8(Cfg9346, Cfg9346_Unlock);
1600 RTL_W32(MAC0, low);
1601 RTL_W32(MAC4, high);
1602 RTL_W8(Cfg9346, Cfg9346_Lock);
1603
1604 spin_unlock_irq(&tp->lock);
1605 }
1606
1607 static int rtl_set_mac_address(struct net_device *dev, void *p)
1608 {
1609 struct rtl8169_private *tp = netdev_priv(dev);
1610 struct sockaddr *addr = p;
1611
1612 if (!is_valid_ether_addr(addr->sa_data))
1613 return -EADDRNOTAVAIL;
1614
1615 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1616
1617 rtl_rar_set(tp, dev->dev_addr);
1618
1619 return 0;
1620 }
1621
1622 static int rtl8169_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1623 {
1624 struct rtl8169_private *tp = netdev_priv(dev);
1625 struct mii_ioctl_data *data = if_mii(ifr);
1626
1627 if (!netif_running(dev))
1628 return -ENODEV;
1629
1630 switch (cmd) {
1631 case SIOCGMIIPHY:
1632 data->phy_id = 32; /* Internal PHY */
1633 return 0;
1634
1635 case SIOCGMIIREG:
1636 data->val_out = mdio_read(tp->mmio_addr, data->reg_num & 0x1f);
1637 return 0;
1638
1639 case SIOCSMIIREG:
1640 if (!capable(CAP_NET_ADMIN))
1641 return -EPERM;
1642 mdio_write(tp->mmio_addr, data->reg_num & 0x1f, data->val_in);
1643 return 0;
1644 }
1645 return -EOPNOTSUPP;
1646 }
1647
1648 static const struct rtl_cfg_info {
1649 void (*hw_start)(struct net_device *);
1650 unsigned int region;
1651 unsigned int align;
1652 u16 intr_event;
1653 u16 napi_event;
1654 unsigned features;
1655 } rtl_cfg_infos [] = {
1656 [RTL_CFG_0] = {
1657 .hw_start = rtl_hw_start_8169,
1658 .region = 1,
1659 .align = 0,
1660 .intr_event = SYSErr | LinkChg | RxOverflow |
1661 RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1662 .napi_event = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1663 .features = RTL_FEATURE_GMII
1664 },
1665 [RTL_CFG_1] = {
1666 .hw_start = rtl_hw_start_8168,
1667 .region = 2,
1668 .align = 8,
1669 .intr_event = SYSErr | LinkChg | RxOverflow |
1670 TxErr | TxOK | RxOK | RxErr,
1671 .napi_event = TxErr | TxOK | RxOK | RxOverflow,
1672 .features = RTL_FEATURE_GMII | RTL_FEATURE_MSI
1673 },
1674 [RTL_CFG_2] = {
1675 .hw_start = rtl_hw_start_8101,
1676 .region = 2,
1677 .align = 8,
1678 .intr_event = SYSErr | LinkChg | RxOverflow | PCSTimeout |
1679 RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1680 .napi_event = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1681 .features = RTL_FEATURE_MSI
1682 }
1683 };
1684
1685 /* Cfg9346_Unlock assumed. */
1686 static unsigned rtl_try_msi(struct pci_dev *pdev, void __iomem *ioaddr,
1687 const struct rtl_cfg_info *cfg)
1688 {
1689 unsigned msi = 0;
1690 u8 cfg2;
1691
1692 cfg2 = RTL_R8(Config2) & ~MSIEnable;
1693 if (cfg->features & RTL_FEATURE_MSI) {
1694 if (pci_enable_msi(pdev)) {
1695 dev_info(&pdev->dev, "no MSI. Back to INTx.\n");
1696 } else {
1697 cfg2 |= MSIEnable;
1698 msi = RTL_FEATURE_MSI;
1699 }
1700 }
1701 RTL_W8(Config2, cfg2);
1702 return msi;
1703 }
1704
1705 static void rtl_disable_msi(struct pci_dev *pdev, struct rtl8169_private *tp)
1706 {
1707 if (tp->features & RTL_FEATURE_MSI) {
1708 pci_disable_msi(pdev);
1709 tp->features &= ~RTL_FEATURE_MSI;
1710 }
1711 }
1712
1713 static int __devinit
1714 rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1715 {
1716 const struct rtl_cfg_info *cfg = rtl_cfg_infos + ent->driver_data;
1717 const unsigned int region = cfg->region;
1718 struct rtl8169_private *tp;
1719 struct mii_if_info *mii;
1720 struct net_device *dev;
1721 void __iomem *ioaddr;
1722 unsigned int i;
1723 int rc;
1724
1725 if (netif_msg_drv(&debug)) {
1726 printk(KERN_INFO "%s Gigabit Ethernet driver %s loaded\n",
1727 MODULENAME, RTL8169_VERSION);
1728 }
1729
1730 dev = alloc_etherdev(sizeof (*tp));
1731 if (!dev) {
1732 if (netif_msg_drv(&debug))
1733 dev_err(&pdev->dev, "unable to alloc new ethernet\n");
1734 rc = -ENOMEM;
1735 goto out;
1736 }
1737
1738 SET_NETDEV_DEV(dev, &pdev->dev);
1739 tp = netdev_priv(dev);
1740 tp->dev = dev;
1741 tp->pci_dev = pdev;
1742 tp->msg_enable = netif_msg_init(debug.msg_enable, R8169_MSG_DEFAULT);
1743
1744 mii = &tp->mii;
1745 mii->dev = dev;
1746 mii->mdio_read = rtl_mdio_read;
1747 mii->mdio_write = rtl_mdio_write;
1748 mii->phy_id_mask = 0x1f;
1749 mii->reg_num_mask = 0x1f;
1750 mii->supports_gmii = !!(cfg->features & RTL_FEATURE_GMII);
1751
1752 /* enable device (incl. PCI PM wakeup and hotplug setup) */
1753 rc = pci_enable_device(pdev);
1754 if (rc < 0) {
1755 if (netif_msg_probe(tp))
1756 dev_err(&pdev->dev, "enable failure\n");
1757 goto err_out_free_dev_1;
1758 }
1759
1760 rc = pci_set_mwi(pdev);
1761 if (rc < 0)
1762 goto err_out_disable_2;
1763
1764 /* make sure PCI base addr 1 is MMIO */
1765 if (!(pci_resource_flags(pdev, region) & IORESOURCE_MEM)) {
1766 if (netif_msg_probe(tp)) {
1767 dev_err(&pdev->dev,
1768 "region #%d not an MMIO resource, aborting\n",
1769 region);
1770 }
1771 rc = -ENODEV;
1772 goto err_out_mwi_3;
1773 }
1774
1775 /* check for weird/broken PCI region reporting */
1776 if (pci_resource_len(pdev, region) < R8169_REGS_SIZE) {
1777 if (netif_msg_probe(tp)) {
1778 dev_err(&pdev->dev,
1779 "Invalid PCI region size(s), aborting\n");
1780 }
1781 rc = -ENODEV;
1782 goto err_out_mwi_3;
1783 }
1784
1785 rc = pci_request_regions(pdev, MODULENAME);
1786 if (rc < 0) {
1787 if (netif_msg_probe(tp))
1788 dev_err(&pdev->dev, "could not request regions.\n");
1789 goto err_out_mwi_3;
1790 }
1791
1792 tp->cp_cmd = PCIMulRW | RxChkSum;
1793
1794 if ((sizeof(dma_addr_t) > 4) &&
1795 !pci_set_dma_mask(pdev, DMA_64BIT_MASK) && use_dac) {
1796 tp->cp_cmd |= PCIDAC;
1797 dev->features |= NETIF_F_HIGHDMA;
1798 } else {
1799 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1800 if (rc < 0) {
1801 if (netif_msg_probe(tp)) {
1802 dev_err(&pdev->dev,
1803 "DMA configuration failed.\n");
1804 }
1805 goto err_out_free_res_4;
1806 }
1807 }
1808
1809 pci_set_master(pdev);
1810
1811 /* ioremap MMIO region */
1812 ioaddr = ioremap(pci_resource_start(pdev, region), R8169_REGS_SIZE);
1813 if (!ioaddr) {
1814 if (netif_msg_probe(tp))
1815 dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
1816 rc = -EIO;
1817 goto err_out_free_res_4;
1818 }
1819
1820 tp->pcie_cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
1821 if (!tp->pcie_cap && netif_msg_probe(tp))
1822 dev_info(&pdev->dev, "no PCI Express capability\n");
1823
1824 /* Unneeded ? Don't mess with Mrs. Murphy. */
1825 rtl8169_irq_mask_and_ack(ioaddr);
1826
1827 /* Soft reset the chip. */
1828 RTL_W8(ChipCmd, CmdReset);
1829
1830 /* Check that the chip has finished the reset. */
1831 for (i = 0; i < 100; i++) {
1832 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
1833 break;
1834 msleep_interruptible(1);
1835 }
1836
1837 /* Identify chip attached to board */
1838 rtl8169_get_mac_version(tp, ioaddr);
1839
1840 rtl8169_print_mac_version(tp);
1841
1842 for (i = 0; i < ARRAY_SIZE(rtl_chip_info); i++) {
1843 if (tp->mac_version == rtl_chip_info[i].mac_version)
1844 break;
1845 }
1846 if (i == ARRAY_SIZE(rtl_chip_info)) {
1847 /* Unknown chip: assume array element #0, original RTL-8169 */
1848 if (netif_msg_probe(tp)) {
1849 dev_printk(KERN_DEBUG, &pdev->dev,
1850 "unknown chip version, assuming %s\n",
1851 rtl_chip_info[0].name);
1852 }
1853 i = 0;
1854 }
1855 tp->chipset = i;
1856
1857 RTL_W8(Cfg9346, Cfg9346_Unlock);
1858 RTL_W8(Config1, RTL_R8(Config1) | PMEnable);
1859 RTL_W8(Config5, RTL_R8(Config5) & PMEStatus);
1860 tp->features |= rtl_try_msi(pdev, ioaddr, cfg);
1861 RTL_W8(Cfg9346, Cfg9346_Lock);
1862
1863 if ((tp->mac_version <= RTL_GIGA_MAC_VER_06) &&
1864 (RTL_R8(PHYstatus) & TBI_Enable)) {
1865 tp->set_speed = rtl8169_set_speed_tbi;
1866 tp->get_settings = rtl8169_gset_tbi;
1867 tp->phy_reset_enable = rtl8169_tbi_reset_enable;
1868 tp->phy_reset_pending = rtl8169_tbi_reset_pending;
1869 tp->link_ok = rtl8169_tbi_link_ok;
1870
1871 tp->phy_1000_ctrl_reg = ADVERTISE_1000FULL; /* Implied by TBI */
1872 } else {
1873 tp->set_speed = rtl8169_set_speed_xmii;
1874 tp->get_settings = rtl8169_gset_xmii;
1875 tp->phy_reset_enable = rtl8169_xmii_reset_enable;
1876 tp->phy_reset_pending = rtl8169_xmii_reset_pending;
1877 tp->link_ok = rtl8169_xmii_link_ok;
1878
1879 dev->do_ioctl = rtl8169_ioctl;
1880 }
1881
1882 /* Get MAC address. FIXME: read EEPROM */
1883 for (i = 0; i < MAC_ADDR_LEN; i++)
1884 dev->dev_addr[i] = RTL_R8(MAC0 + i);
1885 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
1886
1887 dev->open = rtl8169_open;
1888 dev->hard_start_xmit = rtl8169_start_xmit;
1889 dev->get_stats = rtl8169_get_stats;
1890 SET_ETHTOOL_OPS(dev, &rtl8169_ethtool_ops);
1891 dev->stop = rtl8169_close;
1892 dev->tx_timeout = rtl8169_tx_timeout;
1893 dev->set_multicast_list = rtl_set_rx_mode;
1894 dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
1895 dev->irq = pdev->irq;
1896 dev->base_addr = (unsigned long) ioaddr;
1897 dev->change_mtu = rtl8169_change_mtu;
1898 dev->set_mac_address = rtl_set_mac_address;
1899
1900 netif_napi_add(dev, &tp->napi, rtl8169_poll, R8169_NAPI_WEIGHT);
1901
1902 #ifdef CONFIG_R8169_VLAN
1903 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1904 dev->vlan_rx_register = rtl8169_vlan_rx_register;
1905 #endif
1906
1907 #ifdef CONFIG_NET_POLL_CONTROLLER
1908 dev->poll_controller = rtl8169_netpoll;
1909 #endif
1910
1911 tp->intr_mask = 0xffff;
1912 tp->mmio_addr = ioaddr;
1913 tp->align = cfg->align;
1914 tp->hw_start = cfg->hw_start;
1915 tp->intr_event = cfg->intr_event;
1916 tp->napi_event = cfg->napi_event;
1917
1918 init_timer(&tp->timer);
1919 tp->timer.data = (unsigned long) dev;
1920 tp->timer.function = rtl8169_phy_timer;
1921
1922 spin_lock_init(&tp->lock);
1923
1924 rc = register_netdev(dev);
1925 if (rc < 0)
1926 goto err_out_msi_5;
1927
1928 pci_set_drvdata(pdev, dev);
1929
1930 if (netif_msg_probe(tp)) {
1931 u32 xid = RTL_R32(TxConfig) & 0x7cf0f8ff;
1932
1933 printk(KERN_INFO "%s: %s at 0x%lx, "
1934 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
1935 "XID %08x IRQ %d\n",
1936 dev->name,
1937 rtl_chip_info[tp->chipset].name,
1938 dev->base_addr,
1939 dev->dev_addr[0], dev->dev_addr[1],
1940 dev->dev_addr[2], dev->dev_addr[3],
1941 dev->dev_addr[4], dev->dev_addr[5], xid, dev->irq);
1942 }
1943
1944 rtl8169_init_phy(dev, tp);
1945
1946 out:
1947 return rc;
1948
1949 err_out_msi_5:
1950 rtl_disable_msi(pdev, tp);
1951 iounmap(ioaddr);
1952 err_out_free_res_4:
1953 pci_release_regions(pdev);
1954 err_out_mwi_3:
1955 pci_clear_mwi(pdev);
1956 err_out_disable_2:
1957 pci_disable_device(pdev);
1958 err_out_free_dev_1:
1959 free_netdev(dev);
1960 goto out;
1961 }
1962
1963 static void __devexit rtl8169_remove_one(struct pci_dev *pdev)
1964 {
1965 struct net_device *dev = pci_get_drvdata(pdev);
1966 struct rtl8169_private *tp = netdev_priv(dev);
1967
1968 flush_scheduled_work();
1969
1970 unregister_netdev(dev);
1971 rtl_disable_msi(pdev, tp);
1972 rtl8169_release_board(pdev, dev, tp->mmio_addr);
1973 pci_set_drvdata(pdev, NULL);
1974 }
1975
1976 static void rtl8169_set_rxbufsize(struct rtl8169_private *tp,
1977 struct net_device *dev)
1978 {
1979 unsigned int mtu = dev->mtu;
1980
1981 tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
1982 }
1983
1984 static int rtl8169_open(struct net_device *dev)
1985 {
1986 struct rtl8169_private *tp = netdev_priv(dev);
1987 struct pci_dev *pdev = tp->pci_dev;
1988 int retval = -ENOMEM;
1989
1990
1991 rtl8169_set_rxbufsize(tp, dev);
1992
1993 /*
1994 * Rx and Tx desscriptors needs 256 bytes alignment.
1995 * pci_alloc_consistent provides more.
1996 */
1997 tp->TxDescArray = pci_alloc_consistent(pdev, R8169_TX_RING_BYTES,
1998 &tp->TxPhyAddr);
1999 if (!tp->TxDescArray)
2000 goto out;
2001
2002 tp->RxDescArray = pci_alloc_consistent(pdev, R8169_RX_RING_BYTES,
2003 &tp->RxPhyAddr);
2004 if (!tp->RxDescArray)
2005 goto err_free_tx_0;
2006
2007 retval = rtl8169_init_ring(dev);
2008 if (retval < 0)
2009 goto err_free_rx_1;
2010
2011 INIT_DELAYED_WORK(&tp->task, NULL);
2012
2013 smp_mb();
2014
2015 retval = request_irq(dev->irq, rtl8169_interrupt,
2016 (tp->features & RTL_FEATURE_MSI) ? 0 : IRQF_SHARED,
2017 dev->name, dev);
2018 if (retval < 0)
2019 goto err_release_ring_2;
2020
2021 napi_enable(&tp->napi);
2022
2023 rtl_hw_start(dev);
2024
2025 rtl8169_request_timer(dev);
2026
2027 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
2028 out:
2029 return retval;
2030
2031 err_release_ring_2:
2032 rtl8169_rx_clear(tp);
2033 err_free_rx_1:
2034 pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
2035 tp->RxPhyAddr);
2036 err_free_tx_0:
2037 pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
2038 tp->TxPhyAddr);
2039 goto out;
2040 }
2041
2042 static void rtl8169_hw_reset(void __iomem *ioaddr)
2043 {
2044 /* Disable interrupts */
2045 rtl8169_irq_mask_and_ack(ioaddr);
2046
2047 /* Reset the chipset */
2048 RTL_W8(ChipCmd, CmdReset);
2049
2050 /* PCI commit */
2051 RTL_R8(ChipCmd);
2052 }
2053
2054 static void rtl_set_rx_tx_config_registers(struct rtl8169_private *tp)
2055 {
2056 void __iomem *ioaddr = tp->mmio_addr;
2057 u32 cfg = rtl8169_rx_config;
2058
2059 cfg |= (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
2060 RTL_W32(RxConfig, cfg);
2061
2062 /* Set DMA burst size and Interframe Gap Time */
2063 RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
2064 (InterFrameGap << TxInterFrameGapShift));
2065 }
2066
2067 static void rtl_hw_start(struct net_device *dev)
2068 {
2069 struct rtl8169_private *tp = netdev_priv(dev);
2070 void __iomem *ioaddr = tp->mmio_addr;
2071 unsigned int i;
2072
2073 /* Soft reset the chip. */
2074 RTL_W8(ChipCmd, CmdReset);
2075
2076 /* Check that the chip has finished the reset. */
2077 for (i = 0; i < 100; i++) {
2078 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
2079 break;
2080 msleep_interruptible(1);
2081 }
2082
2083 tp->hw_start(dev);
2084
2085 netif_start_queue(dev);
2086 }
2087
2088
2089 static void rtl_set_rx_tx_desc_registers(struct rtl8169_private *tp,
2090 void __iomem *ioaddr)
2091 {
2092 /*
2093 * Magic spell: some iop3xx ARM board needs the TxDescAddrHigh
2094 * register to be written before TxDescAddrLow to work.
2095 * Switching from MMIO to I/O access fixes the issue as well.
2096 */
2097 RTL_W32(TxDescStartAddrHigh, ((u64) tp->TxPhyAddr) >> 32);
2098 RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr) & DMA_32BIT_MASK);
2099 RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr) >> 32);
2100 RTL_W32(RxDescAddrLow, ((u64) tp->RxPhyAddr) & DMA_32BIT_MASK);
2101 }
2102
2103 static u16 rtl_rw_cpluscmd(void __iomem *ioaddr)
2104 {
2105 u16 cmd;
2106
2107 cmd = RTL_R16(CPlusCmd);
2108 RTL_W16(CPlusCmd, cmd);
2109 return cmd;
2110 }
2111
2112 static void rtl_set_rx_max_size(void __iomem *ioaddr)
2113 {
2114 /* Low hurts. Let's disable the filtering. */
2115 RTL_W16(RxMaxSize, 16383);
2116 }
2117
2118 static void rtl8169_set_magic_reg(void __iomem *ioaddr, unsigned mac_version)
2119 {
2120 struct {
2121 u32 mac_version;
2122 u32 clk;
2123 u32 val;
2124 } cfg2_info [] = {
2125 { RTL_GIGA_MAC_VER_05, PCI_Clock_33MHz, 0x000fff00 }, // 8110SCd
2126 { RTL_GIGA_MAC_VER_05, PCI_Clock_66MHz, 0x000fffff },
2127 { RTL_GIGA_MAC_VER_06, PCI_Clock_33MHz, 0x00ffff00 }, // 8110SCe
2128 { RTL_GIGA_MAC_VER_06, PCI_Clock_66MHz, 0x00ffffff }
2129 }, *p = cfg2_info;
2130 unsigned int i;
2131 u32 clk;
2132
2133 clk = RTL_R8(Config2) & PCI_Clock_66MHz;
2134 for (i = 0; i < ARRAY_SIZE(cfg2_info); i++, p++) {
2135 if ((p->mac_version == mac_version) && (p->clk == clk)) {
2136 RTL_W32(0x7c, p->val);
2137 break;
2138 }
2139 }
2140 }
2141
2142 static void rtl_hw_start_8169(struct net_device *dev)
2143 {
2144 struct rtl8169_private *tp = netdev_priv(dev);
2145 void __iomem *ioaddr = tp->mmio_addr;
2146 struct pci_dev *pdev = tp->pci_dev;
2147
2148 if (tp->mac_version == RTL_GIGA_MAC_VER_05) {
2149 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) | PCIMulRW);
2150 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x08);
2151 }
2152
2153 RTL_W8(Cfg9346, Cfg9346_Unlock);
2154 if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2155 (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2156 (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2157 (tp->mac_version == RTL_GIGA_MAC_VER_04))
2158 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2159
2160 RTL_W8(EarlyTxThres, EarlyTxThld);
2161
2162 rtl_set_rx_max_size(ioaddr);
2163
2164 if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2165 (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2166 (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2167 (tp->mac_version == RTL_GIGA_MAC_VER_04))
2168 rtl_set_rx_tx_config_registers(tp);
2169
2170 tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2171
2172 if ((tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2173 (tp->mac_version == RTL_GIGA_MAC_VER_03)) {
2174 dprintk("Set MAC Reg C+CR Offset 0xE0. "
2175 "Bit-3 and bit-14 MUST be 1\n");
2176 tp->cp_cmd |= (1 << 14);
2177 }
2178
2179 RTL_W16(CPlusCmd, tp->cp_cmd);
2180
2181 rtl8169_set_magic_reg(ioaddr, tp->mac_version);
2182
2183 /*
2184 * Undocumented corner. Supposedly:
2185 * (TxTimer << 12) | (TxPackets << 8) | (RxTimer << 4) | RxPackets
2186 */
2187 RTL_W16(IntrMitigate, 0x0000);
2188
2189 rtl_set_rx_tx_desc_registers(tp, ioaddr);
2190
2191 if ((tp->mac_version != RTL_GIGA_MAC_VER_01) &&
2192 (tp->mac_version != RTL_GIGA_MAC_VER_02) &&
2193 (tp->mac_version != RTL_GIGA_MAC_VER_03) &&
2194 (tp->mac_version != RTL_GIGA_MAC_VER_04)) {
2195 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2196 rtl_set_rx_tx_config_registers(tp);
2197 }
2198
2199 RTL_W8(Cfg9346, Cfg9346_Lock);
2200
2201 /* Initially a 10 us delay. Turned it into a PCI commit. - FR */
2202 RTL_R8(IntrMask);
2203
2204 RTL_W32(RxMissed, 0);
2205
2206 rtl_set_rx_mode(dev);
2207
2208 /* no early-rx interrupts */
2209 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2210
2211 /* Enable all known interrupts by setting the interrupt mask. */
2212 RTL_W16(IntrMask, tp->intr_event);
2213 }
2214
2215 static void rtl_tx_performance_tweak(struct pci_dev *pdev, u16 force)
2216 {
2217 struct net_device *dev = pci_get_drvdata(pdev);
2218 struct rtl8169_private *tp = netdev_priv(dev);
2219 int cap = tp->pcie_cap;
2220
2221 if (cap) {
2222 u16 ctl;
2223
2224 pci_read_config_word(pdev, cap + PCI_EXP_DEVCTL, &ctl);
2225 ctl = (ctl & ~PCI_EXP_DEVCTL_READRQ) | force;
2226 pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL, ctl);
2227 }
2228 }
2229
2230 static void rtl_csi_access_enable(void __iomem *ioaddr)
2231 {
2232 u32 csi;
2233
2234 csi = rtl_csi_read(ioaddr, 0x070c) & 0x00ffffff;
2235 rtl_csi_write(ioaddr, 0x070c, csi | 0x27000000);
2236 }
2237
2238 struct ephy_info {
2239 unsigned int offset;
2240 u16 mask;
2241 u16 bits;
2242 };
2243
2244 static void rtl_ephy_init(void __iomem *ioaddr, struct ephy_info *e, int len)
2245 {
2246 u16 w;
2247
2248 while (len-- > 0) {
2249 w = (rtl_ephy_read(ioaddr, e->offset) & ~e->mask) | e->bits;
2250 rtl_ephy_write(ioaddr, e->offset, w);
2251 e++;
2252 }
2253 }
2254
2255 static void rtl_hw_start_8168(struct net_device *dev)
2256 {
2257 struct rtl8169_private *tp = netdev_priv(dev);
2258 void __iomem *ioaddr = tp->mmio_addr;
2259 struct pci_dev *pdev = tp->pci_dev;
2260
2261 RTL_W8(Cfg9346, Cfg9346_Unlock);
2262
2263 RTL_W8(EarlyTxThres, EarlyTxThld);
2264
2265 rtl_set_rx_max_size(ioaddr);
2266
2267 rtl_set_rx_tx_config_registers(tp);
2268
2269 tp->cp_cmd |= RTL_R16(CPlusCmd) | PktCntrDisable | INTT_1;
2270
2271 RTL_W16(CPlusCmd, tp->cp_cmd);
2272
2273 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2274
2275 RTL_W16(IntrMitigate, 0x5151);
2276
2277 /* Work around for RxFIFO overflow. */
2278 if (tp->mac_version == RTL_GIGA_MAC_VER_11) {
2279 tp->intr_event |= RxFIFOOver | PCSTimeout;
2280 tp->intr_event &= ~RxOverflow;
2281 }
2282
2283 rtl_set_rx_tx_desc_registers(tp, ioaddr);
2284
2285 RTL_W8(Cfg9346, Cfg9346_Lock);
2286
2287 RTL_R8(IntrMask);
2288
2289 RTL_W32(RxMissed, 0);
2290
2291 rtl_set_rx_mode(dev);
2292
2293 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2294
2295 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2296
2297 RTL_W16(IntrMask, tp->intr_event);
2298 }
2299
2300 #define R810X_CPCMD_QUIRK_MASK (\
2301 EnableBist | \
2302 Mac_dbgo_oe | \
2303 Force_half_dup | \
2304 Force_half_dup | \
2305 Force_txflow_en | \
2306 Cxpl_dbg_sel | \
2307 ASF | \
2308 PktCntrDisable | \
2309 PCIDAC | \
2310 PCIMulRW)
2311
2312 static void rtl_hw_start_8102e_1(void __iomem *ioaddr, struct pci_dev *pdev)
2313 {
2314 static struct ephy_info e_info_8102e_1[] = {
2315 { 0x01, 0, 0x6e65 },
2316 { 0x02, 0, 0x091f },
2317 { 0x03, 0, 0xc2f9 },
2318 { 0x06, 0, 0xafb5 },
2319 { 0x07, 0, 0x0e00 },
2320 { 0x19, 0, 0xec80 },
2321 { 0x01, 0, 0x2e65 },
2322 { 0x01, 0, 0x6e65 }
2323 };
2324 u8 cfg1;
2325
2326 rtl_csi_access_enable(ioaddr);
2327
2328 RTL_W8(DBG_REG, FIX_NAK_1);
2329
2330 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2331
2332 RTL_W8(Config1,
2333 LEDS1 | LEDS0 | Speed_down | MEMMAP | IOMAP | VPD | PMEnable);
2334 RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2335
2336 cfg1 = RTL_R8(Config1);
2337 if ((cfg1 & LEDS0) && (cfg1 & LEDS1))
2338 RTL_W8(Config1, cfg1 & ~LEDS0);
2339
2340 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2341
2342 rtl_ephy_init(ioaddr, e_info_8102e_1, ARRAY_SIZE(e_info_8102e_1));
2343 }
2344
2345 static void rtl_hw_start_8102e_2(void __iomem *ioaddr, struct pci_dev *pdev)
2346 {
2347 rtl_csi_access_enable(ioaddr);
2348
2349 rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2350
2351 RTL_W8(Config1, MEMMAP | IOMAP | VPD | PMEnable);
2352 RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2353
2354 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2355 }
2356
2357 static void rtl_hw_start_8102e_3(void __iomem *ioaddr, struct pci_dev *pdev)
2358 {
2359 rtl_hw_start_8102e_2(ioaddr, pdev);
2360
2361 rtl_ephy_write(ioaddr, 0x03, 0xc2f9);
2362 }
2363
2364 static void rtl_hw_start_8101(struct net_device *dev)
2365 {
2366 struct rtl8169_private *tp = netdev_priv(dev);
2367 void __iomem *ioaddr = tp->mmio_addr;
2368 struct pci_dev *pdev = tp->pci_dev;
2369
2370 if ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
2371 (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
2372 int cap = tp->pcie_cap;
2373
2374 if (cap) {
2375 pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL,
2376 PCI_EXP_DEVCTL_NOSNOOP_EN);
2377 }
2378 }
2379
2380 switch (tp->mac_version) {
2381 case RTL_GIGA_MAC_VER_07:
2382 rtl_hw_start_8102e_1(ioaddr, pdev);
2383 break;
2384
2385 case RTL_GIGA_MAC_VER_08:
2386 rtl_hw_start_8102e_3(ioaddr, pdev);
2387 break;
2388
2389 case RTL_GIGA_MAC_VER_09:
2390 rtl_hw_start_8102e_2(ioaddr, pdev);
2391 break;
2392 }
2393
2394 RTL_W8(Cfg9346, Cfg9346_Unlock);
2395
2396 RTL_W8(EarlyTxThres, EarlyTxThld);
2397
2398 rtl_set_rx_max_size(ioaddr);
2399
2400 tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2401
2402 RTL_W16(CPlusCmd, tp->cp_cmd);
2403
2404 RTL_W16(IntrMitigate, 0x0000);
2405
2406 rtl_set_rx_tx_desc_registers(tp, ioaddr);
2407
2408 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2409 rtl_set_rx_tx_config_registers(tp);
2410
2411 RTL_W8(Cfg9346, Cfg9346_Lock);
2412
2413 RTL_R8(IntrMask);
2414
2415 RTL_W32(RxMissed, 0);
2416
2417 rtl_set_rx_mode(dev);
2418
2419 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2420
2421 RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xf000);
2422
2423 RTL_W16(IntrMask, tp->intr_event);
2424 }
2425
2426 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
2427 {
2428 struct rtl8169_private *tp = netdev_priv(dev);
2429 int ret = 0;
2430
2431 if (new_mtu < ETH_ZLEN || new_mtu > SafeMtu)
2432 return -EINVAL;
2433
2434 dev->mtu = new_mtu;
2435
2436 if (!netif_running(dev))
2437 goto out;
2438
2439 rtl8169_down(dev);
2440
2441 rtl8169_set_rxbufsize(tp, dev);
2442
2443 ret = rtl8169_init_ring(dev);
2444 if (ret < 0)
2445 goto out;
2446
2447 napi_enable(&tp->napi);
2448
2449 rtl_hw_start(dev);
2450
2451 rtl8169_request_timer(dev);
2452
2453 out:
2454 return ret;
2455 }
2456
2457 static inline void rtl8169_make_unusable_by_asic(struct RxDesc *desc)
2458 {
2459 desc->addr = cpu_to_le64(0x0badbadbadbadbadull);
2460 desc->opts1 &= ~cpu_to_le32(DescOwn | RsvdMask);
2461 }
2462
2463 static void rtl8169_free_rx_skb(struct rtl8169_private *tp,
2464 struct sk_buff **sk_buff, struct RxDesc *desc)
2465 {
2466 struct pci_dev *pdev = tp->pci_dev;
2467
2468 pci_unmap_single(pdev, le64_to_cpu(desc->addr), tp->rx_buf_sz,
2469 PCI_DMA_FROMDEVICE);
2470 dev_kfree_skb(*sk_buff);
2471 *sk_buff = NULL;
2472 rtl8169_make_unusable_by_asic(desc);
2473 }
2474
2475 static inline void rtl8169_mark_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
2476 {
2477 u32 eor = le32_to_cpu(desc->opts1) & RingEnd;
2478
2479 desc->opts1 = cpu_to_le32(DescOwn | eor | rx_buf_sz);
2480 }
2481
2482 static inline void rtl8169_map_to_asic(struct RxDesc *desc, dma_addr_t mapping,
2483 u32 rx_buf_sz)
2484 {
2485 desc->addr = cpu_to_le64(mapping);
2486 wmb();
2487 rtl8169_mark_to_asic(desc, rx_buf_sz);
2488 }
2489
2490 static struct sk_buff *rtl8169_alloc_rx_skb(struct pci_dev *pdev,
2491 struct net_device *dev,
2492 struct RxDesc *desc, int rx_buf_sz,
2493 unsigned int align)
2494 {
2495 struct sk_buff *skb;
2496 dma_addr_t mapping;
2497 unsigned int pad;
2498
2499 pad = align ? align : NET_IP_ALIGN;
2500
2501 skb = netdev_alloc_skb(dev, rx_buf_sz + pad);
2502 if (!skb)
2503 goto err_out;
2504
2505 skb_reserve(skb, align ? ((pad - 1) & (unsigned long)skb->data) : pad);
2506
2507 mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
2508 PCI_DMA_FROMDEVICE);
2509
2510 rtl8169_map_to_asic(desc, mapping, rx_buf_sz);
2511 out:
2512 return skb;
2513
2514 err_out:
2515 rtl8169_make_unusable_by_asic(desc);
2516 goto out;
2517 }
2518
2519 static void rtl8169_rx_clear(struct rtl8169_private *tp)
2520 {
2521 unsigned int i;
2522
2523 for (i = 0; i < NUM_RX_DESC; i++) {
2524 if (tp->Rx_skbuff[i]) {
2525 rtl8169_free_rx_skb(tp, tp->Rx_skbuff + i,
2526 tp->RxDescArray + i);
2527 }
2528 }
2529 }
2530
2531 static u32 rtl8169_rx_fill(struct rtl8169_private *tp, struct net_device *dev,
2532 u32 start, u32 end)
2533 {
2534 u32 cur;
2535
2536 for (cur = start; end - cur != 0; cur++) {
2537 struct sk_buff *skb;
2538 unsigned int i = cur % NUM_RX_DESC;
2539
2540 WARN_ON((s32)(end - cur) < 0);
2541
2542 if (tp->Rx_skbuff[i])
2543 continue;
2544
2545 skb = rtl8169_alloc_rx_skb(tp->pci_dev, dev,
2546 tp->RxDescArray + i,
2547 tp->rx_buf_sz, tp->align);
2548 if (!skb)
2549 break;
2550
2551 tp->Rx_skbuff[i] = skb;
2552 }
2553 return cur - start;
2554 }
2555
2556 static inline void rtl8169_mark_as_last_descriptor(struct RxDesc *desc)
2557 {
2558 desc->opts1 |= cpu_to_le32(RingEnd);
2559 }
2560
2561 static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
2562 {
2563 tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
2564 }
2565
2566 static int rtl8169_init_ring(struct net_device *dev)
2567 {
2568 struct rtl8169_private *tp = netdev_priv(dev);
2569
2570 rtl8169_init_ring_indexes(tp);
2571
2572 memset(tp->tx_skb, 0x0, NUM_TX_DESC * sizeof(struct ring_info));
2573 memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *));
2574
2575 if (rtl8169_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC)
2576 goto err_out;
2577
2578 rtl8169_mark_as_last_descriptor(tp->RxDescArray + NUM_RX_DESC - 1);
2579
2580 return 0;
2581
2582 err_out:
2583 rtl8169_rx_clear(tp);
2584 return -ENOMEM;
2585 }
2586
2587 static void rtl8169_unmap_tx_skb(struct pci_dev *pdev, struct ring_info *tx_skb,
2588 struct TxDesc *desc)
2589 {
2590 unsigned int len = tx_skb->len;
2591
2592 pci_unmap_single(pdev, le64_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
2593 desc->opts1 = 0x00;
2594 desc->opts2 = 0x00;
2595 desc->addr = 0x00;
2596 tx_skb->len = 0;
2597 }
2598
2599 static void rtl8169_tx_clear(struct rtl8169_private *tp)
2600 {
2601 unsigned int i;
2602
2603 for (i = tp->dirty_tx; i < tp->dirty_tx + NUM_TX_DESC; i++) {
2604 unsigned int entry = i % NUM_TX_DESC;
2605 struct ring_info *tx_skb = tp->tx_skb + entry;
2606 unsigned int len = tx_skb->len;
2607
2608 if (len) {
2609 struct sk_buff *skb = tx_skb->skb;
2610
2611 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb,
2612 tp->TxDescArray + entry);
2613 if (skb) {
2614 dev_kfree_skb(skb);
2615 tx_skb->skb = NULL;
2616 }
2617 tp->dev->stats.tx_dropped++;
2618 }
2619 }
2620 tp->cur_tx = tp->dirty_tx = 0;
2621 }
2622
2623 static void rtl8169_schedule_work(struct net_device *dev, work_func_t task)
2624 {
2625 struct rtl8169_private *tp = netdev_priv(dev);
2626
2627 PREPARE_DELAYED_WORK(&tp->task, task);
2628 schedule_delayed_work(&tp->task, 4);
2629 }
2630
2631 static void rtl8169_wait_for_quiescence(struct net_device *dev)
2632 {
2633 struct rtl8169_private *tp = netdev_priv(dev);
2634 void __iomem *ioaddr = tp->mmio_addr;
2635
2636 synchronize_irq(dev->irq);
2637
2638 /* Wait for any pending NAPI task to complete */
2639 napi_disable(&tp->napi);
2640
2641 rtl8169_irq_mask_and_ack(ioaddr);
2642
2643 tp->intr_mask = 0xffff;
2644 RTL_W16(IntrMask, tp->intr_event);
2645 napi_enable(&tp->napi);
2646 }
2647
2648 static void rtl8169_reinit_task(struct work_struct *work)
2649 {
2650 struct rtl8169_private *tp =
2651 container_of(work, struct rtl8169_private, task.work);
2652 struct net_device *dev = tp->dev;
2653 int ret;
2654
2655 rtnl_lock();
2656
2657 if (!netif_running(dev))
2658 goto out_unlock;
2659
2660 rtl8169_wait_for_quiescence(dev);
2661 rtl8169_close(dev);
2662
2663 ret = rtl8169_open(dev);
2664 if (unlikely(ret < 0)) {
2665 if (net_ratelimit() && netif_msg_drv(tp)) {
2666 printk(KERN_ERR PFX "%s: reinit failure (status = %d)."
2667 " Rescheduling.\n", dev->name, ret);
2668 }
2669 rtl8169_schedule_work(dev, rtl8169_reinit_task);
2670 }
2671
2672 out_unlock:
2673 rtnl_unlock();
2674 }
2675
2676 static void rtl8169_reset_task(struct work_struct *work)
2677 {
2678 struct rtl8169_private *tp =
2679 container_of(work, struct rtl8169_private, task.work);
2680 struct net_device *dev = tp->dev;
2681
2682 rtnl_lock();
2683
2684 if (!netif_running(dev))
2685 goto out_unlock;
2686
2687 rtl8169_wait_for_quiescence(dev);
2688
2689 rtl8169_rx_interrupt(dev, tp, tp->mmio_addr, ~(u32)0);
2690 rtl8169_tx_clear(tp);
2691
2692 if (tp->dirty_rx == tp->cur_rx) {
2693 rtl8169_init_ring_indexes(tp);
2694 rtl_hw_start(dev);
2695 netif_wake_queue(dev);
2696 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
2697 } else {
2698 if (net_ratelimit() && netif_msg_intr(tp)) {
2699 printk(KERN_EMERG PFX "%s: Rx buffers shortage\n",
2700 dev->name);
2701 }
2702 rtl8169_schedule_work(dev, rtl8169_reset_task);
2703 }
2704
2705 out_unlock:
2706 rtnl_unlock();
2707 }
2708
2709 static void rtl8169_tx_timeout(struct net_device *dev)
2710 {
2711 struct rtl8169_private *tp = netdev_priv(dev);
2712
2713 rtl8169_hw_reset(tp->mmio_addr);
2714
2715 /* Let's wait a bit while any (async) irq lands on */
2716 rtl8169_schedule_work(dev, rtl8169_reset_task);
2717 }
2718
2719 static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
2720 u32 opts1)
2721 {
2722 struct skb_shared_info *info = skb_shinfo(skb);
2723 unsigned int cur_frag, entry;
2724 struct TxDesc * uninitialized_var(txd);
2725
2726 entry = tp->cur_tx;
2727 for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) {
2728 skb_frag_t *frag = info->frags + cur_frag;
2729 dma_addr_t mapping;
2730 u32 status, len;
2731 void *addr;
2732
2733 entry = (entry + 1) % NUM_TX_DESC;
2734
2735 txd = tp->TxDescArray + entry;
2736 len = frag->size;
2737 addr = ((void *) page_address(frag->page)) + frag->page_offset;
2738 mapping = pci_map_single(tp->pci_dev, addr, len, PCI_DMA_TODEVICE);
2739
2740 /* anti gcc 2.95.3 bugware (sic) */
2741 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2742
2743 txd->opts1 = cpu_to_le32(status);
2744 txd->addr = cpu_to_le64(mapping);
2745
2746 tp->tx_skb[entry].len = len;
2747 }
2748
2749 if (cur_frag) {
2750 tp->tx_skb[entry].skb = skb;
2751 txd->opts1 |= cpu_to_le32(LastFrag);
2752 }
2753
2754 return cur_frag;
2755 }
2756
2757 static inline u32 rtl8169_tso_csum(struct sk_buff *skb, struct net_device *dev)
2758 {
2759 if (dev->features & NETIF_F_TSO) {
2760 u32 mss = skb_shinfo(skb)->gso_size;
2761
2762 if (mss)
2763 return LargeSend | ((mss & MSSMask) << MSSShift);
2764 }
2765 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2766 const struct iphdr *ip = ip_hdr(skb);
2767
2768 if (ip->protocol == IPPROTO_TCP)
2769 return IPCS | TCPCS;
2770 else if (ip->protocol == IPPROTO_UDP)
2771 return IPCS | UDPCS;
2772 WARN_ON(1); /* we need a WARN() */
2773 }
2774 return 0;
2775 }
2776
2777 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev)
2778 {
2779 struct rtl8169_private *tp = netdev_priv(dev);
2780 unsigned int frags, entry = tp->cur_tx % NUM_TX_DESC;
2781 struct TxDesc *txd = tp->TxDescArray + entry;
2782 void __iomem *ioaddr = tp->mmio_addr;
2783 dma_addr_t mapping;
2784 u32 status, len;
2785 u32 opts1;
2786 int ret = NETDEV_TX_OK;
2787
2788 if (unlikely(TX_BUFFS_AVAIL(tp) < skb_shinfo(skb)->nr_frags)) {
2789 if (netif_msg_drv(tp)) {
2790 printk(KERN_ERR
2791 "%s: BUG! Tx Ring full when queue awake!\n",
2792 dev->name);
2793 }
2794 goto err_stop;
2795 }
2796
2797 if (unlikely(le32_to_cpu(txd->opts1) & DescOwn))
2798 goto err_stop;
2799
2800 opts1 = DescOwn | rtl8169_tso_csum(skb, dev);
2801
2802 frags = rtl8169_xmit_frags(tp, skb, opts1);
2803 if (frags) {
2804 len = skb_headlen(skb);
2805 opts1 |= FirstFrag;
2806 } else {
2807 len = skb->len;
2808
2809 if (unlikely(len < ETH_ZLEN)) {
2810 if (skb_padto(skb, ETH_ZLEN))
2811 goto err_update_stats;
2812 len = ETH_ZLEN;
2813 }
2814
2815 opts1 |= FirstFrag | LastFrag;
2816 tp->tx_skb[entry].skb = skb;
2817 }
2818
2819 mapping = pci_map_single(tp->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
2820
2821 tp->tx_skb[entry].len = len;
2822 txd->addr = cpu_to_le64(mapping);
2823 txd->opts2 = cpu_to_le32(rtl8169_tx_vlan_tag(tp, skb));
2824
2825 wmb();
2826
2827 /* anti gcc 2.95.3 bugware (sic) */
2828 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2829 txd->opts1 = cpu_to_le32(status);
2830
2831 dev->trans_start = jiffies;
2832
2833 tp->cur_tx += frags + 1;
2834
2835 smp_wmb();
2836
2837 RTL_W8(TxPoll, NPQ); /* set polling bit */
2838
2839 if (TX_BUFFS_AVAIL(tp) < MAX_SKB_FRAGS) {
2840 netif_stop_queue(dev);
2841 smp_rmb();
2842 if (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)
2843 netif_wake_queue(dev);
2844 }
2845
2846 out:
2847 return ret;
2848
2849 err_stop:
2850 netif_stop_queue(dev);
2851 ret = NETDEV_TX_BUSY;
2852 err_update_stats:
2853 dev->stats.tx_dropped++;
2854 goto out;
2855 }
2856
2857 static void rtl8169_pcierr_interrupt(struct net_device *dev)
2858 {
2859 struct rtl8169_private *tp = netdev_priv(dev);
2860 struct pci_dev *pdev = tp->pci_dev;
2861 void __iomem *ioaddr = tp->mmio_addr;
2862 u16 pci_status, pci_cmd;
2863
2864 pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
2865 pci_read_config_word(pdev, PCI_STATUS, &pci_status);
2866
2867 if (netif_msg_intr(tp)) {
2868 printk(KERN_ERR
2869 "%s: PCI error (cmd = 0x%04x, status = 0x%04x).\n",
2870 dev->name, pci_cmd, pci_status);
2871 }
2872
2873 /*
2874 * The recovery sequence below admits a very elaborated explanation:
2875 * - it seems to work;
2876 * - I did not see what else could be done;
2877 * - it makes iop3xx happy.
2878 *
2879 * Feel free to adjust to your needs.
2880 */
2881 if (pdev->broken_parity_status)
2882 pci_cmd &= ~PCI_COMMAND_PARITY;
2883 else
2884 pci_cmd |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY;
2885
2886 pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
2887
2888 pci_write_config_word(pdev, PCI_STATUS,
2889 pci_status & (PCI_STATUS_DETECTED_PARITY |
2890 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_REC_MASTER_ABORT |
2891 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_SIG_TARGET_ABORT));
2892
2893 /* The infamous DAC f*ckup only happens at boot time */
2894 if ((tp->cp_cmd & PCIDAC) && !tp->dirty_rx && !tp->cur_rx) {
2895 if (netif_msg_intr(tp))
2896 printk(KERN_INFO "%s: disabling PCI DAC.\n", dev->name);
2897 tp->cp_cmd &= ~PCIDAC;
2898 RTL_W16(CPlusCmd, tp->cp_cmd);
2899 dev->features &= ~NETIF_F_HIGHDMA;
2900 }
2901
2902 rtl8169_hw_reset(ioaddr);
2903
2904 rtl8169_schedule_work(dev, rtl8169_reinit_task);
2905 }
2906
2907 static void rtl8169_tx_interrupt(struct net_device *dev,
2908 struct rtl8169_private *tp,
2909 void __iomem *ioaddr)
2910 {
2911 unsigned int dirty_tx, tx_left;
2912
2913 dirty_tx = tp->dirty_tx;
2914 smp_rmb();
2915 tx_left = tp->cur_tx - dirty_tx;
2916
2917 while (tx_left > 0) {
2918 unsigned int entry = dirty_tx % NUM_TX_DESC;
2919 struct ring_info *tx_skb = tp->tx_skb + entry;
2920 u32 len = tx_skb->len;
2921 u32 status;
2922
2923 rmb();
2924 status = le32_to_cpu(tp->TxDescArray[entry].opts1);
2925 if (status & DescOwn)
2926 break;
2927
2928 dev->stats.tx_bytes += len;
2929 dev->stats.tx_packets++;
2930
2931 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb, tp->TxDescArray + entry);
2932
2933 if (status & LastFrag) {
2934 dev_kfree_skb_irq(tx_skb->skb);
2935 tx_skb->skb = NULL;
2936 }
2937 dirty_tx++;
2938 tx_left--;
2939 }
2940
2941 if (tp->dirty_tx != dirty_tx) {
2942 tp->dirty_tx = dirty_tx;
2943 smp_wmb();
2944 if (netif_queue_stopped(dev) &&
2945 (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)) {
2946 netif_wake_queue(dev);
2947 }
2948 /*
2949 * 8168 hack: TxPoll requests are lost when the Tx packets are
2950 * too close. Let's kick an extra TxPoll request when a burst
2951 * of start_xmit activity is detected (if it is not detected,
2952 * it is slow enough). -- FR
2953 */
2954 smp_rmb();
2955 if (tp->cur_tx != dirty_tx)
2956 RTL_W8(TxPoll, NPQ);
2957 }
2958 }
2959
2960 static inline int rtl8169_fragmented_frame(u32 status)
2961 {
2962 return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
2963 }
2964
2965 static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
2966 {
2967 u32 opts1 = le32_to_cpu(desc->opts1);
2968 u32 status = opts1 & RxProtoMask;
2969
2970 if (((status == RxProtoTCP) && !(opts1 & TCPFail)) ||
2971 ((status == RxProtoUDP) && !(opts1 & UDPFail)) ||
2972 ((status == RxProtoIP) && !(opts1 & IPFail)))
2973 skb->ip_summed = CHECKSUM_UNNECESSARY;
2974 else
2975 skb->ip_summed = CHECKSUM_NONE;
2976 }
2977
2978 static inline bool rtl8169_try_rx_copy(struct sk_buff **sk_buff,
2979 struct rtl8169_private *tp, int pkt_size,
2980 dma_addr_t addr)
2981 {
2982 struct sk_buff *skb;
2983 bool done = false;
2984
2985 if (pkt_size >= rx_copybreak)
2986 goto out;
2987
2988 skb = netdev_alloc_skb(tp->dev, pkt_size + NET_IP_ALIGN);
2989 if (!skb)
2990 goto out;
2991
2992 pci_dma_sync_single_for_cpu(tp->pci_dev, addr, pkt_size,
2993 PCI_DMA_FROMDEVICE);
2994 skb_reserve(skb, NET_IP_ALIGN);
2995 skb_copy_from_linear_data(*sk_buff, skb->data, pkt_size);
2996 *sk_buff = skb;
2997 done = true;
2998 out:
2999 return done;
3000 }
3001
3002 static int rtl8169_rx_interrupt(struct net_device *dev,
3003 struct rtl8169_private *tp,
3004 void __iomem *ioaddr, u32 budget)
3005 {
3006 unsigned int cur_rx, rx_left;
3007 unsigned int delta, count;
3008
3009 cur_rx = tp->cur_rx;
3010 rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx;
3011 rx_left = min(rx_left, budget);
3012
3013 for (; rx_left > 0; rx_left--, cur_rx++) {
3014 unsigned int entry = cur_rx % NUM_RX_DESC;
3015 struct RxDesc *desc = tp->RxDescArray + entry;
3016 u32 status;
3017
3018 rmb();
3019 status = le32_to_cpu(desc->opts1);
3020
3021 if (status & DescOwn)
3022 break;
3023 if (unlikely(status & RxRES)) {
3024 if (netif_msg_rx_err(tp)) {
3025 printk(KERN_INFO
3026 "%s: Rx ERROR. status = %08x\n",
3027 dev->name, status);
3028 }
3029 dev->stats.rx_errors++;
3030 if (status & (RxRWT | RxRUNT))
3031 dev->stats.rx_length_errors++;
3032 if (status & RxCRC)
3033 dev->stats.rx_crc_errors++;
3034 if (status & RxFOVF) {
3035 rtl8169_schedule_work(dev, rtl8169_reset_task);
3036 dev->stats.rx_fifo_errors++;
3037 }
3038 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3039 } else {
3040 struct sk_buff *skb = tp->Rx_skbuff[entry];
3041 dma_addr_t addr = le64_to_cpu(desc->addr);
3042 int pkt_size = (status & 0x00001FFF) - 4;
3043 struct pci_dev *pdev = tp->pci_dev;
3044
3045 /*
3046 * The driver does not support incoming fragmented
3047 * frames. They are seen as a symptom of over-mtu
3048 * sized frames.
3049 */
3050 if (unlikely(rtl8169_fragmented_frame(status))) {
3051 dev->stats.rx_dropped++;
3052 dev->stats.rx_length_errors++;
3053 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3054 continue;
3055 }
3056
3057 rtl8169_rx_csum(skb, desc);
3058
3059 if (rtl8169_try_rx_copy(&skb, tp, pkt_size, addr)) {
3060 pci_dma_sync_single_for_device(pdev, addr,
3061 pkt_size, PCI_DMA_FROMDEVICE);
3062 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3063 } else {
3064 pci_unmap_single(pdev, addr, tp->rx_buf_sz,
3065 PCI_DMA_FROMDEVICE);
3066 tp->Rx_skbuff[entry] = NULL;
3067 }
3068
3069 skb_put(skb, pkt_size);
3070 skb->protocol = eth_type_trans(skb, dev);
3071
3072 if (rtl8169_rx_vlan_skb(tp, desc, skb) < 0)
3073 netif_receive_skb(skb);
3074
3075 dev->last_rx = jiffies;
3076 dev->stats.rx_bytes += pkt_size;
3077 dev->stats.rx_packets++;
3078 }
3079
3080 /* Work around for AMD plateform. */
3081 if ((desc->opts2 & cpu_to_le32(0xfffe000)) &&
3082 (tp->mac_version == RTL_GIGA_MAC_VER_05)) {
3083 desc->opts2 = 0;
3084 cur_rx++;
3085 }
3086 }
3087
3088 count = cur_rx - tp->cur_rx;
3089 tp->cur_rx = cur_rx;
3090
3091 delta = rtl8169_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx);
3092 if (!delta && count && netif_msg_intr(tp))
3093 printk(KERN_INFO "%s: no Rx buffer allocated\n", dev->name);
3094 tp->dirty_rx += delta;
3095
3096 /*
3097 * FIXME: until there is periodic timer to try and refill the ring,
3098 * a temporary shortage may definitely kill the Rx process.
3099 * - disable the asic to try and avoid an overflow and kick it again
3100 * after refill ?
3101 * - how do others driver handle this condition (Uh oh...).
3102 */
3103 if ((tp->dirty_rx + NUM_RX_DESC == tp->cur_rx) && netif_msg_intr(tp))
3104 printk(KERN_EMERG "%s: Rx buffers exhausted\n", dev->name);
3105
3106 return count;
3107 }
3108
3109 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
3110 {
3111 struct net_device *dev = dev_instance;
3112 struct rtl8169_private *tp = netdev_priv(dev);
3113 void __iomem *ioaddr = tp->mmio_addr;
3114 int handled = 0;
3115 int status;
3116
3117 status = RTL_R16(IntrStatus);
3118
3119 /* hotplug/major error/no more work/shared irq */
3120 if ((status == 0xffff) || !status)
3121 goto out;
3122
3123 handled = 1;
3124
3125 if (unlikely(!netif_running(dev))) {
3126 rtl8169_asic_down(ioaddr);
3127 goto out;
3128 }
3129
3130 status &= tp->intr_mask;
3131 RTL_W16(IntrStatus,
3132 (status & RxFIFOOver) ? (status | RxOverflow) : status);
3133
3134 if (!(status & tp->intr_event))
3135 goto out;
3136
3137 /* Work around for rx fifo overflow */
3138 if (unlikely(status & RxFIFOOver) &&
3139 (tp->mac_version == RTL_GIGA_MAC_VER_11)) {
3140 netif_stop_queue(dev);
3141 rtl8169_tx_timeout(dev);
3142 goto out;
3143 }
3144
3145 if (unlikely(status & SYSErr)) {
3146 rtl8169_pcierr_interrupt(dev);
3147 goto out;
3148 }
3149
3150 if (status & LinkChg)
3151 rtl8169_check_link_status(dev, tp, ioaddr);
3152
3153 if (status & tp->napi_event) {
3154 RTL_W16(IntrMask, tp->intr_event & ~tp->napi_event);
3155 tp->intr_mask = ~tp->napi_event;
3156
3157 if (likely(netif_rx_schedule_prep(dev, &tp->napi)))
3158 __netif_rx_schedule(dev, &tp->napi);
3159 else if (netif_msg_intr(tp)) {
3160 printk(KERN_INFO "%s: interrupt %04x in poll\n",
3161 dev->name, status);
3162 }
3163 }
3164 out:
3165 return IRQ_RETVAL(handled);
3166 }
3167
3168 static int rtl8169_poll(struct napi_struct *napi, int budget)
3169 {
3170 struct rtl8169_private *tp = container_of(napi, struct rtl8169_private, napi);
3171 struct net_device *dev = tp->dev;
3172 void __iomem *ioaddr = tp->mmio_addr;
3173 int work_done;
3174
3175 work_done = rtl8169_rx_interrupt(dev, tp, ioaddr, (u32) budget);
3176 rtl8169_tx_interrupt(dev, tp, ioaddr);
3177
3178 if (work_done < budget) {
3179 netif_rx_complete(dev, napi);
3180 tp->intr_mask = 0xffff;
3181 /*
3182 * 20040426: the barrier is not strictly required but the
3183 * behavior of the irq handler could be less predictable
3184 * without it. Btw, the lack of flush for the posted pci
3185 * write is safe - FR
3186 */
3187 smp_wmb();
3188 RTL_W16(IntrMask, tp->intr_event);
3189 }
3190
3191 return work_done;
3192 }
3193
3194 static void rtl8169_down(struct net_device *dev)
3195 {
3196 struct rtl8169_private *tp = netdev_priv(dev);
3197 void __iomem *ioaddr = tp->mmio_addr;
3198 unsigned int intrmask;
3199
3200 rtl8169_delete_timer(dev);
3201
3202 netif_stop_queue(dev);
3203
3204 napi_disable(&tp->napi);
3205
3206 core_down:
3207 spin_lock_irq(&tp->lock);
3208
3209 rtl8169_asic_down(ioaddr);
3210
3211 /* Update the error counts. */
3212 dev->stats.rx_missed_errors += RTL_R32(RxMissed);
3213 RTL_W32(RxMissed, 0);
3214
3215 spin_unlock_irq(&tp->lock);
3216
3217 synchronize_irq(dev->irq);
3218
3219 /* Give a racing hard_start_xmit a few cycles to complete. */
3220 synchronize_sched(); /* FIXME: should this be synchronize_irq()? */
3221
3222 /*
3223 * And now for the 50k$ question: are IRQ disabled or not ?
3224 *
3225 * Two paths lead here:
3226 * 1) dev->close
3227 * -> netif_running() is available to sync the current code and the
3228 * IRQ handler. See rtl8169_interrupt for details.
3229 * 2) dev->change_mtu
3230 * -> rtl8169_poll can not be issued again and re-enable the
3231 * interruptions. Let's simply issue the IRQ down sequence again.
3232 *
3233 * No loop if hotpluged or major error (0xffff).
3234 */
3235 intrmask = RTL_R16(IntrMask);
3236 if (intrmask && (intrmask != 0xffff))
3237 goto core_down;
3238
3239 rtl8169_tx_clear(tp);
3240
3241 rtl8169_rx_clear(tp);
3242 }
3243
3244 static int rtl8169_close(struct net_device *dev)
3245 {
3246 struct rtl8169_private *tp = netdev_priv(dev);
3247 struct pci_dev *pdev = tp->pci_dev;
3248
3249 rtl8169_down(dev);
3250
3251 free_irq(dev->irq, dev);
3252
3253 pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
3254 tp->RxPhyAddr);
3255 pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
3256 tp->TxPhyAddr);
3257 tp->TxDescArray = NULL;
3258 tp->RxDescArray = NULL;
3259
3260 return 0;
3261 }
3262
3263 static void rtl_set_rx_mode(struct net_device *dev)
3264 {
3265 struct rtl8169_private *tp = netdev_priv(dev);
3266 void __iomem *ioaddr = tp->mmio_addr;
3267 unsigned long flags;
3268 u32 mc_filter[2]; /* Multicast hash filter */
3269 int rx_mode;
3270 u32 tmp = 0;
3271
3272 if (dev->flags & IFF_PROMISC) {
3273 /* Unconditionally log net taps. */
3274 if (netif_msg_link(tp)) {
3275 printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n",
3276 dev->name);
3277 }
3278 rx_mode =
3279 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
3280 AcceptAllPhys;
3281 mc_filter[1] = mc_filter[0] = 0xffffffff;
3282 } else if ((dev->mc_count > multicast_filter_limit)
3283 || (dev->flags & IFF_ALLMULTI)) {
3284 /* Too many to filter perfectly -- accept all multicasts. */
3285 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
3286 mc_filter[1] = mc_filter[0] = 0xffffffff;
3287 } else {
3288 struct dev_mc_list *mclist;
3289 unsigned int i;
3290
3291 rx_mode = AcceptBroadcast | AcceptMyPhys;
3292 mc_filter[1] = mc_filter[0] = 0;
3293 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
3294 i++, mclist = mclist->next) {
3295 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
3296 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
3297 rx_mode |= AcceptMulticast;
3298 }
3299 }
3300
3301 spin_lock_irqsave(&tp->lock, flags);
3302
3303 tmp = rtl8169_rx_config | rx_mode |
3304 (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
3305
3306 if (tp->mac_version > RTL_GIGA_MAC_VER_06) {
3307 u32 data = mc_filter[0];
3308
3309 mc_filter[0] = swab32(mc_filter[1]);
3310 mc_filter[1] = swab32(data);
3311 }
3312
3313 RTL_W32(MAR0 + 0, mc_filter[0]);
3314 RTL_W32(MAR0 + 4, mc_filter[1]);
3315
3316 RTL_W32(RxConfig, tmp);
3317
3318 spin_unlock_irqrestore(&tp->lock, flags);
3319 }
3320
3321 /**
3322 * rtl8169_get_stats - Get rtl8169 read/write statistics
3323 * @dev: The Ethernet Device to get statistics for
3324 *
3325 * Get TX/RX statistics for rtl8169
3326 */
3327 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev)
3328 {
3329 struct rtl8169_private *tp = netdev_priv(dev);
3330 void __iomem *ioaddr = tp->mmio_addr;
3331 unsigned long flags;
3332
3333 if (netif_running(dev)) {
3334 spin_lock_irqsave(&tp->lock, flags);
3335 dev->stats.rx_missed_errors += RTL_R32(RxMissed);
3336 RTL_W32(RxMissed, 0);
3337 spin_unlock_irqrestore(&tp->lock, flags);
3338 }
3339
3340 return &dev->stats;
3341 }
3342
3343 #ifdef CONFIG_PM
3344
3345 static int rtl8169_suspend(struct pci_dev *pdev, pm_message_t state)
3346 {
3347 struct net_device *dev = pci_get_drvdata(pdev);
3348 struct rtl8169_private *tp = netdev_priv(dev);
3349 void __iomem *ioaddr = tp->mmio_addr;
3350
3351 if (!netif_running(dev))
3352 goto out_pci_suspend;
3353
3354 netif_device_detach(dev);
3355 netif_stop_queue(dev);
3356
3357 spin_lock_irq(&tp->lock);
3358
3359 rtl8169_asic_down(ioaddr);
3360
3361 dev->stats.rx_missed_errors += RTL_R32(RxMissed);
3362 RTL_W32(RxMissed, 0);
3363
3364 spin_unlock_irq(&tp->lock);
3365
3366 out_pci_suspend:
3367 pci_save_state(pdev);
3368 pci_enable_wake(pdev, pci_choose_state(pdev, state),
3369 (tp->features & RTL_FEATURE_WOL) ? 1 : 0);
3370 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3371
3372 return 0;
3373 }
3374
3375 static int rtl8169_resume(struct pci_dev *pdev)
3376 {
3377 struct net_device *dev = pci_get_drvdata(pdev);
3378
3379 pci_set_power_state(pdev, PCI_D0);
3380 pci_restore_state(pdev);
3381 pci_enable_wake(pdev, PCI_D0, 0);
3382
3383 if (!netif_running(dev))
3384 goto out;
3385
3386 netif_device_attach(dev);
3387
3388 rtl8169_schedule_work(dev, rtl8169_reset_task);
3389 out:
3390 return 0;
3391 }
3392
3393 #endif /* CONFIG_PM */
3394
3395 static struct pci_driver rtl8169_pci_driver = {
3396 .name = MODULENAME,
3397 .id_table = rtl8169_pci_tbl,
3398 .probe = rtl8169_init_one,
3399 .remove = __devexit_p(rtl8169_remove_one),
3400 #ifdef CONFIG_PM
3401 .suspend = rtl8169_suspend,
3402 .resume = rtl8169_resume,
3403 #endif
3404 };
3405
3406 static int __init rtl8169_init_module(void)
3407 {
3408 return pci_register_driver(&rtl8169_pci_driver);
3409 }
3410
3411 static void __exit rtl8169_cleanup_module(void)
3412 {
3413 pci_unregister_driver(&rtl8169_pci_driver);
3414 }
3415
3416 module_init(rtl8169_init_module);
3417 module_exit(rtl8169_cleanup_module);
Linux kernel - Deliverables
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